diff --git a/indra/llui/lltoolbar.cpp b/indra/llui/lltoolbar.cpp
index b9256dd890d86ade8cf15747b4aed84a5f5fb6a5..1c74395c666b6812a0f79e9fe3733f664a83fce9 100644
--- a/indra/llui/lltoolbar.cpp
+++ b/indra/llui/lltoolbar.cpp
@@ -1059,10 +1059,9 @@ BOOL LLToolBar::handleDragAndDrop(S32 x, S32 y, MASK mask, BOOL drop,
 	// Convert drag position into insert position and rank 
 	if (!isReadOnly() && handled && !drop)
 	{
-		LLInventoryItem* inv_item = (LLInventoryItem*)cargo_data;
-		LLAssetType::EType type = inv_item->getType();
-		if (type == LLAssetType::AT_WIDGET)
+		if (cargo_type == DAD_WIDGET)
 		{
+			LLInventoryItem* inv_item = (LLInventoryItem*)cargo_data;
 			LLCommandId dragged_command(inv_item->getUUID());
 			int orig_rank = getRankFromPosition(dragged_command);
 			mDragRank = getRankFromPosition(x, y);
diff --git a/indra/newview/app_settings/settings_per_account.xml b/indra/newview/app_settings/settings_per_account.xml
index 47137c8de9674bf4cc19c3f6c7eb3f7d5c3f0ee9..ada374f892d7e500a2c527e4bccf18885f8ab0b4 100644
--- a/indra/newview/app_settings/settings_per_account.xml
+++ b/indra/newview/app_settings/settings_per_account.xml
@@ -290,7 +290,7 @@
       <key>Type</key>
       <string>Boolean</string>
       <key>Value</key>
-      <integer>0</integer>
+      <integer>1</integer>
     </map>
     <key>ShowFavoritesOnLogin</key>
         <map>
diff --git a/indra/newview/llfloaterimcontainer.cpp b/indra/newview/llfloaterimcontainer.cpp
index 2fd8901d9e98fc7e26bfa657041ccf0574697ce8..0cda1f79b348d548fa7e3c03ae69b270baaa1dc5 100644
--- a/indra/newview/llfloaterimcontainer.cpp
+++ b/indra/newview/llfloaterimcontainer.cpp
@@ -626,6 +626,12 @@ void LLFloaterIMContainer::setVisible(BOOL visible)
 	LLMultiFloater::setVisible(visible);
 }
 
+void LLFloaterIMContainer::setVisibleAndFrontmost(BOOL take_focus, const LLSD& key)
+{
+	LLMultiFloater::setVisibleAndFrontmost(take_focus, key);
+    selectConversationPair(getSelectedSession(), false, take_focus);
+}
+
 void LLFloaterIMContainer::updateResizeLimits()
 {
 	LLMultiFloater::updateResizeLimits();
@@ -1329,6 +1335,9 @@ void LLFloaterIMContainer::showConversation(const LLUUID& session_id)
 {
     setVisibleAndFrontmost(false);
     selectConversationPair(session_id, true);
+
+    LLFloaterIMSessionTab* session_floater = LLFloaterIMSessionTab::findConversation(session_id);
+    session_floater->restoreFloater();
 }
 
 void LLFloaterIMContainer::clearAllFlashStates()
@@ -1960,10 +1969,13 @@ bool LLFloaterIMContainer::selectNextorPreviousConversation(bool select_next, bo
 
 void LLFloaterIMContainer::expandConversation()
 {
-	LLConversationViewSession* widget = dynamic_cast<LLConversationViewSession*>(get_ptr_in_map(mConversationsWidgets,getSelectedSession()));
-	if (widget)
+	if(!mConversationsPane->isCollapsed())
 	{
-		widget->setOpen(!widget->isOpen());
+		LLConversationViewSession* widget = dynamic_cast<LLConversationViewSession*>(get_ptr_in_map(mConversationsWidgets,getSelectedSession()));
+		if (widget)
+		{
+			widget->setOpen(!widget->isOpen());
+		}
 	}
 }
 
diff --git a/indra/newview/llfloaterimcontainer.h b/indra/newview/llfloaterimcontainer.h
index 2cbc1e99f9a511217450eee0d8269f36959998c5..52b672241f614b1539de3f56597ef581aea8118e 100644
--- a/indra/newview/llfloaterimcontainer.h
+++ b/indra/newview/llfloaterimcontainer.h
@@ -60,6 +60,7 @@ class LLFloaterIMContainer
 	/*virtual*/ void onOpen(const LLSD& key);
 	/*virtual*/ void draw();
 	/*virtual*/ void setVisible(BOOL visible);
+	/*virtual*/ void setVisibleAndFrontmost(BOOL take_focus=TRUE, const LLSD& key = LLSD());
 	/*virtual*/ void updateResizeLimits();
 	void onCloseFloater(LLUUID& id);
 
diff --git a/indra/newview/llfloaterimnearbychat.cpp b/indra/newview/llfloaterimnearbychat.cpp
index 7c552f98e054ba6f600d9a67fcb3b242de7921d4..171509af59d1e3f953610db5e6ade8e83815674c 100644
--- a/indra/newview/llfloaterimnearbychat.cpp
+++ b/indra/newview/llfloaterimnearbychat.cpp
@@ -283,6 +283,11 @@ void LLFloaterIMNearbyChat::onTearOffClicked()
 void LLFloaterIMNearbyChat::onOpen(const LLSD& key)
 {
 	LLFloaterIMSessionTab::onOpen(key);
+	if(!isMessagePaneExpanded())
+	{
+		restoreFloater();
+		onCollapseToLine(this);
+	}
 	showTranslationCheckbox(LLTranslate::isTranslationConfigured());
 }
 
@@ -348,6 +353,11 @@ bool LLFloaterIMNearbyChat::isChatVisible() const
 void LLFloaterIMNearbyChat::showHistory()
 {
 	openFloater();
+	if(!isMessagePaneExpanded())
+	{
+		restoreFloater();
+		setFocus(true);
+	}
 	setResizeLimits(getMinWidth(), EXPANDED_MIN_HEIGHT);
 }
 
@@ -734,7 +744,14 @@ void LLFloaterIMNearbyChat::startChat(const char* line)
 	LLFloaterIMNearbyChat* nearby_chat = LLFloaterReg::getTypedInstance<LLFloaterIMNearbyChat>("nearby_chat");
 	if (nearby_chat)
 	{
-		nearby_chat->show();
+		if(!nearby_chat->isTornOff())
+		{
+			nearby_chat->show();
+		}
+		if(nearby_chat->isMinimized())
+		{
+			nearby_chat->setMinimized(false);
+		}
 		nearby_chat->setVisible(TRUE);
 		nearby_chat->setFocus(TRUE);
 		nearby_chat->mInputEditor->setFocus(TRUE);
diff --git a/indra/newview/llfloaterimsessiontab.cpp b/indra/newview/llfloaterimsessiontab.cpp
index cfd239c22f5abee9c371beac969ed887672076fe..0333bacd58931d6026ba6b2394dc3e0e30cb2608 100644
--- a/indra/newview/llfloaterimsessiontab.cpp
+++ b/indra/newview/llfloaterimsessiontab.cpp
@@ -30,6 +30,7 @@
 #include "llfloaterimsessiontab.h"
 
 #include "llagent.h"
+#include "llagentcamera.h"
 #include "llavataractions.h"
 #include "llchatentry.h"
 #include "llchathistory.h"
@@ -57,11 +58,12 @@ LLFloaterIMSessionTab::LLFloaterIMSessionTab(const LLSD& session_id)
   , mSpeakingIndicator(NULL)
   , mChatHistory(NULL)
   , mInputEditor(NULL)
-  , mInputEditorTopPad(0)
+  , mInputEditorPad(0)
   , mRefreshTimer(new LLTimer())
   , mIsHostAttached(false)
   , mHasVisibleBeenInitialized(false)
   , mIsParticipantListExpanded(true)
+  , mChatLayoutPanel(NULL)
 {
     setAutoFocus(FALSE);
 	mSession = LLIMModel::getInstance()->findIMSession(mSessionID);
@@ -125,8 +127,12 @@ void LLFloaterIMSessionTab::setVisible(BOOL visible)
 	if(visible && !mHasVisibleBeenInitialized)
 	{
 		mHasVisibleBeenInitialized = true;
-		LLFloaterReg::getTypedInstance<LLFloaterIMContainer>("im_container")->setVisible(true);
+		if(!gAgentCamera.cameraMouselook())
+		{
+			LLFloaterReg::getTypedInstance<LLFloaterIMContainer>("im_container")->setVisible(true);
+		}
 		LLFloaterIMSessionTab::addToHost(mSessionID);
+		mInputButtonPanel->setVisible(isTornOff());
 	}
 
 	LLTransientDockableFloater::setVisible(visible);
@@ -190,12 +196,29 @@ void LLFloaterIMSessionTab::addToHost(const LLUUID& session_id)
 	}
 }
 
+void LLFloaterIMSessionTab::assignResizeLimits()
+{
+	bool is_participants_pane_collapsed = mParticipantListPanel->isCollapsed();
+
+    // disable a layoutstack's functionality when participant list panel is collapsed
+	mRightPartPanel->setIgnoreReshape(is_participants_pane_collapsed);
+
+    S32 participants_pane_target_width = is_participants_pane_collapsed?
+    		0 : (mParticipantListPanel->getRect().getWidth() + LLPANEL_BORDER_WIDTH);
+
+    S32 new_min_width = participants_pane_target_width + mRightPartPanel->getExpandedMinDim() + mFloaterExtraWidth;
+
+	setResizeLimits(new_min_width, getMinHeight());
+
+	this->mParticipantListAndHistoryStack->updateLayout();
+}
+
 BOOL LLFloaterIMSessionTab::postBuild()
 {
 	BOOL result;
 
 	mBodyStack = getChild<LLLayoutStack>("main_stack");
-
+    mParticipantListAndHistoryStack = getChild<LLLayoutStack>("im_panels");
 
 	mCloseBtn = getChild<LLButton>("close_btn");
 	mCloseBtn->setCommitCallback(boost::bind(&LLFloater::onClickClose, this));
@@ -212,6 +235,8 @@ BOOL LLFloaterIMSessionTab::postBuild()
 	mGearBtn = getChild<LLButton>("gear_btn");
 
 	mParticipantListPanel = getChild<LLLayoutPanel>("speakers_list_panel");
+	mRightPartPanel = getChild<LLLayoutPanel>("right_part_holder");
+
 	mToolbarPanel = getChild<LLLayoutPanel>("toolbar_panel");
 	mContentPanel = getChild<LLLayoutPanel>("body_panel");
 	mInputButtonPanel = getChild<LLLayoutPanel>("input_button_layout_panel");
@@ -232,12 +257,15 @@ BOOL LLFloaterIMSessionTab::postBuild()
 	mChatHistory = getChild<LLChatHistory>("chat_history");
 
 	mInputEditor = getChild<LLChatEntry>("chat_editor");
-	mInputEditor->setTextExpandedCallback(boost::bind(&LLFloaterIMSessionTab::reshapeChatHistory, this));
+
+	mChatLayoutPanel = getChild<LLLayoutPanel>("chat_layout_panel");
+	
+	mInputEditor->setTextExpandedCallback(boost::bind(&LLFloaterIMSessionTab::reshapeChatLayoutPanel, this));
 	mInputEditor->setCommitOnFocusLost( FALSE );
 	mInputEditor->setPassDelete(TRUE);
 	mInputEditor->setFont(LLViewerChat::getChatFont());
 
-	mInputEditorTopPad = mChatHistory->getRect().mBottom - mInputEditor->getRect().mTop;
+	mInputEditorPad = mChatLayoutPanel->getRect().getHeight() - mInputEditor->getRect().getHeight();
 
 	setOpenPositioning(LLFloaterEnums::POSITIONING_RELATIVE);
 
@@ -288,6 +316,15 @@ BOOL LLFloaterIMSessionTab::postBuild()
 		LLFloaterIMSessionTab::onSlide(this);
 	}
 
+	// The resize limits for LLFloaterIMSessionTab should be updated, based on current values of width of conversation and message panels
+	mParticipantListPanel->getResizeBar()->setResizeListener(boost::bind(&LLFloaterIMSessionTab::assignResizeLimits, this));
+	mFloaterExtraWidth =
+			getRect().getWidth()
+			- mParticipantListAndHistoryStack->getRect().getWidth()
+			- (mParticipantListPanel->isCollapsed()? 0 : LLPANEL_BORDER_WIDTH);
+
+	assignResizeLimits();
+
 	return result;
 }
 
@@ -660,12 +697,13 @@ void LLFloaterIMSessionTab::updateHeaderAndToolbar()
 			&& mIsParticipantListExpanded
 			&& !mIsP2PChat;
 
-	mParticipantListPanel->setVisible(is_participant_list_visible);
-
+	mParticipantListAndHistoryStack->collapsePanel(mParticipantListPanel, !is_participant_list_visible);
+    mParticipantListPanel->setVisible(is_participant_list_visible);
 
 	// Display collapse image (<<) if the floater is hosted
 	// or if it is torn off but has an open control panel.
 	bool is_expanded = is_not_torn_off || is_participant_list_visible;
+    
 	mExpandCollapseBtn->setImageOverlay(getString(is_expanded ? "collapse_icon" : "expand_icon"));
 	mExpandCollapseBtn->setToolTip(
 			is_not_torn_off?
@@ -703,15 +741,11 @@ void LLFloaterIMSessionTab::forceReshape()
 }
 
 
-void LLFloaterIMSessionTab::reshapeChatHistory()
+void LLFloaterIMSessionTab::reshapeChatLayoutPanel()
 {
-	LLRect chat_rect  = mChatHistory->getRect();
+	LLRect chat_layout_panel_rect = mChatLayoutPanel->getRect();
 	LLRect input_rect = mInputEditor->getRect();
-
-	int delta_height = chat_rect.mBottom - (input_rect.mTop + mInputEditorTopPad);
-
-	chat_rect.setLeftTopAndSize(chat_rect.mLeft, chat_rect.mTop, chat_rect.getWidth(), chat_rect.getHeight() + delta_height);
-	mChatHistory->setShape(chat_rect);
+	mChatLayoutPanel->reshape(chat_layout_panel_rect.getWidth(), input_rect.getHeight() + mInputEditorPad, FALSE);
 }
 
 void LLFloaterIMSessionTab::showTranslationCheckbox(BOOL show)
@@ -786,15 +820,19 @@ void LLFloaterIMSessionTab::onSlide(LLFloaterIMSessionTab* self)
 	{
 		if (!self->mIsP2PChat)
 		{
-			bool expand = !self->mParticipantListPanel->getVisible();
-
-			// Expand/collapse the IM control panel
-			self->mParticipantListPanel->setVisible(expand);
-            gSavedSettings.setBOOL("IMShowControlPanel", expand);
-            self->mIsParticipantListExpanded = expand;
-			self->mExpandCollapseBtn->setImageOverlay(self->getString(expand ? "collapse_icon" : "expand_icon"));
+            // The state must toggle the collapsed state of the panel
+            bool should_be_expanded = self->mParticipantListPanel->isCollapsed();
+
+			// Update the expand/collapse flag of the participant list panel and save it
+            gSavedSettings.setBOOL("IMShowControlPanel", should_be_expanded);
+            self->mIsParticipantListExpanded = should_be_expanded;
+            
+            // Refresh for immediate feedback
+            self->refreshConversation();
 		}
 	}
+
+	self->assignResizeLimits();
 }
 
 void LLFloaterIMSessionTab::onCollapseToLine(LLFloaterIMSessionTab* self)
@@ -802,18 +840,12 @@ void LLFloaterIMSessionTab::onCollapseToLine(LLFloaterIMSessionTab* self)
 	LLFloaterIMContainer* host_floater = dynamic_cast<LLFloaterIMContainer*>(self->getHost());
 	if (!host_floater)
 	{
-		if(self->mParticipantListPanel->getVisible())
-		{
-			onSlide(self);
-		}
-
 		bool expand = self->isMessagePaneExpanded();
 		self->mExpandCollapseLineBtn->setImageOverlay(self->getString(expand ? "collapseline_icon" : "expandline_icon"));
 		self->mContentPanel->setVisible(!expand);
 		self->mToolbarPanel->setVisible(!expand);
 		self->reshapeFloater(expand);
 		self->setMessagePaneExpanded(!expand);
-
 	}
 }
 
@@ -844,6 +876,10 @@ void LLFloaterIMSessionTab::restoreFloater()
 {
 	if(!isMessagePaneExpanded())
 	{
+		if(isMinimized())
+		{
+			setMinimized(false);
+		}
 		mContentPanel->setVisible(true);
 		mToolbarPanel->setVisible(true);
 		LLRect floater_rect = getRect();
diff --git a/indra/newview/llfloaterimsessiontab.h b/indra/newview/llfloaterimsessiontab.h
index e41f63903737230e13352731278a27a99f2b042b..f0899a3c0934ae0d1fa6ded9c02c18880c69efc4 100644
--- a/indra/newview/llfloaterimsessiontab.h
+++ b/indra/newview/llfloaterimsessiontab.h
@@ -100,6 +100,7 @@ class LLFloaterIMSessionTab
 	virtual BOOL handleKeyHere( KEY key, MASK mask );
 	bool isMessagePaneExpanded(){return mMessagePaneExpanded;}
 	void setMessagePaneExpanded(bool expanded){mMessagePaneExpanded = expanded;}
+	void restoreFloater();
 
 protected:
 
@@ -115,7 +116,6 @@ class LLFloaterIMSessionTab
 	static void onSlide(LLFloaterIMSessionTab *self);
 	static void onCollapseToLine(LLFloaterIMSessionTab *self);
 	void reshapeFloater(bool collapse);
-	void restoreFloater();
 
 	// refresh a visual state of the Call button
 	void updateCallBtnState(bool callIsActive);
@@ -140,6 +140,9 @@ class LLFloaterIMSessionTab
 	void appendMessage(const LLChat& chat, const LLSD &args = 0);
 
 	std::string appendTime();
+	void assignResizeLimits();
+
+	S32  mFloaterExtraWidth;
 
 	bool mIsNearbyChat;
 	bool mIsP2PChat;
@@ -155,7 +158,9 @@ class LLFloaterIMSessionTab
 	
 	LLUUID mSessionID; 
 	LLLayoutStack* mBodyStack;
+	LLLayoutStack* mParticipantListAndHistoryStack;
 	LLLayoutPanel* mParticipantListPanel;	// add the widgets to that see mConversationsListPanel
+	LLLayoutPanel* mRightPartPanel;
 	LLLayoutPanel* mContentPanel;
 	LLLayoutPanel* mToolbarPanel;
 	LLLayoutPanel* mInputButtonPanel;
@@ -168,7 +173,8 @@ class LLFloaterIMSessionTab
     LLOutputMonitorCtrl* mSpeakingIndicator;
 	LLChatHistory* mChatHistory;
 	LLChatEntry* mInputEditor;
-	int mInputEditorTopPad; // padding between input field and chat history
+	LLLayoutPanel * mChatLayoutPanel;
+	int mInputEditorPad; // padding between input field and chat history
 
 	LLButton* mExpandCollapseLineBtn;
 	LLButton* mExpandCollapseBtn;
@@ -195,7 +201,7 @@ class LLFloaterIMSessionTab
 	 * and avoid overlapping, since input chat field can be vertically expanded.
 	 * Implementation: chat history bottom "follows" top+top_pad of input chat field
 	 */
-	void reshapeChatHistory();
+	void reshapeChatLayoutPanel();
 
 	bool checkIfTornOff();
     bool mIsHostAttached;
diff --git a/indra/newview/llvoavatar.cpp b/indra/newview/llvoavatar.cpp
index d295fc60cd2b8ce5af2ce6c1ee3dca68d9c7f2af..a3093f069dbb92ef4106b35f81b86b2bc1263f34 100644
--- a/indra/newview/llvoavatar.cpp
+++ b/indra/newview/llvoavatar.cpp
@@ -675,7 +675,7 @@ LLVOAvatar::LLVOAvatar(const LLUUID& id,
 	mBelowWater(FALSE),
 	mLastAppearanceBlendTime(0.f),
 	mAppearanceAnimating(FALSE),
-	mNameString(),
+    mNameIsSet(false),
 	mTitle(),
 	mNameAway(false),
 	mNameDoNotDisturb(false),
@@ -3096,8 +3096,7 @@ void LLVOAvatar::idleUpdateNameTagText(BOOL new_name)
 	}
 
 	// Rebuild name tag if state change detected
-	if (mNameString.empty()
-		|| (mNameString.size() == 2 && mNameString[0] == 10 && mNameString[1] == 10) // *TODO : find out why mNameString is sometimes ""
+	if (!mNameIsSet
 		|| new_name
 		|| (!title && !mTitle.empty())
 		|| (title && mTitle != title->getString())
@@ -3292,17 +3291,16 @@ void LLVOAvatar::addNameTagLine(const std::string& line, const LLColor4& color,
 	{
 		mNameText->addLine(line, color, (LLFontGL::StyleFlags)style, font);
 	}
-	mNameString += line;
-	mNameString += '\n';
+    mNameIsSet |= !line.empty();
 }
 
 void LLVOAvatar::clearNameTag()
 {
-	mNameString.clear();
+    mNameIsSet = false;
 	if (mNameText)
 	{
 		mNameText->setLabel("");
-		mNameText->setString( "" );
+		mNameText->setString("");
 	}
 	mTimeVisible.reset();
 }
diff --git a/indra/newview/llvoavatar.h b/indra/newview/llvoavatar.h
index c59a3a150c4ba57ba9510e7fceb2822743dfccd2..9f1f209920860b68609715a63fe23eaea514c1f1 100644
--- a/indra/newview/llvoavatar.h
+++ b/indra/newview/llvoavatar.h
@@ -939,7 +939,7 @@ class LLVOAvatar :
 	static void		getAnimLabels(LLDynamicArray<std::string>* labels);
 	static void		getAnimNames(LLDynamicArray<std::string>* names);	
 private:
-	std::string		mNameString;		// UTF-8 title + name + status
+    bool            mNameIsSet;
 	std::string  	mTitle;
 	bool	  		mNameAway;
 	bool	  		mNameDoNotDisturb;
diff --git a/indra/newview/llvoicevivox.cpp b/indra/newview/llvoicevivox.cpp
index f3342b7ff18bd07150802bef3faec719b828e9d1..c3cc90f040567c7c596c55e7e84825069427e6aa 100644
--- a/indra/newview/llvoicevivox.cpp
+++ b/indra/newview/llvoicevivox.cpp
@@ -1258,7 +1258,7 @@ void LLVivoxVoiceClient::stateMachine()
 		
 		//MARK: stateCreatingSessionGroup
 		case stateCreatingSessionGroup:
-			if(mSessionTerminateRequested || !mVoiceEnabled && mIsInitialized)
+			if(mSessionTerminateRequested || (!mVoiceEnabled && mIsInitialized))
 			{
 				// *TODO: Question: is this the right way out of this state
 				setState(stateSessionTerminated);
@@ -1274,7 +1274,7 @@ void LLVivoxVoiceClient::stateMachine()
 		//MARK: stateRetrievingParcelVoiceInfo
 		case stateRetrievingParcelVoiceInfo: 
 			// wait until parcel voice info is received.
-			if(mSessionTerminateRequested || !mVoiceEnabled && mIsInitialized)
+			if(mSessionTerminateRequested || (!mVoiceEnabled && mIsInitialized))
 			{
 				// if a terminate request has been received,
 				// bail and go to the stateSessionTerminated
@@ -1294,7 +1294,7 @@ void LLVivoxVoiceClient::stateMachine()
 			// Otherwise, if you log in but don't join a proximal channel (such as when your login location has voice disabled), your friends list won't sync.
 			sendFriendsListUpdates();
 			
-			if(mSessionTerminateRequested || !mVoiceEnabled && mIsInitialized)
+			if(mSessionTerminateRequested || (!mVoiceEnabled && mIsInitialized))
 			{
 				// TODO: Question: Is this the right way out of this state?
 				setState(stateSessionTerminated);
@@ -1442,7 +1442,7 @@ void LLVivoxVoiceClient::stateMachine()
 		//MARK: stateRunning
 		case stateRunning:				// steady state
 			// Disabling voice or disconnect requested.
-			if(!mVoiceEnabled && mIsInitialized || mSessionTerminateRequested)
+			if((!mVoiceEnabled && mIsInitialized) || mSessionTerminateRequested)
 			{
 				leaveAudioSession();
 			}
@@ -2671,33 +2671,19 @@ void LLVivoxVoiceClient::checkFriend(const LLUUID& id)
 {
 	buddyListEntry *buddy = findBuddy(id);
 
-	// Make sure we don't add a name before it's been looked up.
+	// Make sure we don't add a name before it's been looked up in the avatar name cache
 	LLAvatarName av_name;
-	if(LLAvatarNameCache::get(id, &av_name))
+	if (LLAvatarNameCache::get(id, &av_name))
 	{
-		// *NOTE: For now, we feed legacy names to Vivox because I don't know
-		// if their service can support a mix of new and old clients with
-		// different sorts of names.
+		// *NOTE: We feed legacy names to Vivox because we don't know if their service
+		// can support a mix of new and old clients with different sorts of names.
 		std::string name = av_name.getAccountName();
-
-		const LLRelationship* relationInfo = LLAvatarTracker::instance().getBuddyInfo(id);
-		bool canSeeMeOnline = false;
-		if(relationInfo && relationInfo->isRightGrantedTo(LLRelationship::GRANT_ONLINE_STATUS))
-			canSeeMeOnline = true;
-		
-		// When we get here, mNeedsSend is true and mInSLFriends is false.  Change them as necessary.
 		
-		if(buddy)
+		if (buddy)
 		{
-			// This buddy is already in both lists.
-
-			if(name != buddy->mDisplayName)
-			{
-				// The buddy is in the list with the wrong name.  Update it with the correct name.
-				LL_WARNS("Voice") << "Buddy " << id << " has wrong name (\"" << buddy->mDisplayName << "\" should be \"" << name << "\"), updating."<< LL_ENDL;
-				buddy->mDisplayName = name;
-				buddy->mNeedsNameUpdate = true;		// This will cause the buddy to be resent.
-			}
+			// This buddy is already in both lists (vivox buddies and avatar cache).
+            // Trust the avatar cache more for the display name (vivox display name are notoriously wrong)
+            buddy->mDisplayName = name;
 		}
 		else
 		{
@@ -2706,20 +2692,19 @@ void LLVivoxVoiceClient::checkFriend(const LLUUID& id)
 			buddy->mUUID = id;
 		}
 		
-		// In all the above cases, the buddy is in the SL friends list (which is how we got here).
-		buddy->mInSLFriends = true;
-		buddy->mCanSeeMeOnline = canSeeMeOnline;
+		const LLRelationship* relationInfo = LLAvatarTracker::instance().getBuddyInfo(id);
+		buddy->mCanSeeMeOnline = (relationInfo && relationInfo->isRightGrantedTo(LLRelationship::GRANT_ONLINE_STATUS));
+		// In all the above cases, the buddy is in the SL friends list and tha name has been resolved (which is how we got here).
 		buddy->mNameResolved = true;
-		
+		buddy->mInSLFriends = true;
 	}
 	else
 	{
-		// This name hasn't been looked up yet.  Don't do anything with this buddy list entry until it has.
-		if(buddy)
+		// This name hasn't been looked up yet in the avatar cache. Don't do anything with this buddy list entry until it has.
+		if (buddy)
 		{
 			buddy->mNameResolved = false;
 		}
-		
 		// Initiate a lookup.
 		// The "lookup completed" callback will ensure that the friends list is rechecked after it completes.
 		lookupName(id);
@@ -2827,13 +2812,12 @@ void LLVivoxVoiceClient::sendFriendsListUpdates()
 			{
 				std::ostringstream stream;
 
-				if(buddy->mInSLFriends && (!buddy->mInVivoxBuddies || buddy->mNeedsNameUpdate))
+				if(buddy->mInSLFriends && !buddy->mInVivoxBuddies)
 				{					
 					if(mNumberOfAliases > 0)
 					{
 						// Add (or update) this entry in the vivox buddy list
 						buddy->mInVivoxBuddies = true;
-						buddy->mNeedsNameUpdate = false;
 						LL_DEBUGS("Voice") << "add/update " << buddy->mURI << " (" << buddy->mDisplayName << ")" << LL_ENDL;
 						stream 
 							<< "<Request requestId=\"" << mCommandCookie++ << "\" action=\"Account.BuddySet.1\">"
@@ -5859,7 +5843,6 @@ LLVivoxVoiceClient::buddyListEntry::buddyListEntry(const std::string &uri) :
 	mNameResolved = false;
 	mInVivoxBuddies = false;
 	mInSLFriends = false;
-	mNeedsNameUpdate = false;
 }
 
 void LLVivoxVoiceClient::processBuddyListEntry(const std::string &uri, const std::string &displayName)
@@ -5884,25 +5867,21 @@ LLVivoxVoiceClient::buddyListEntry *LLVivoxVoiceClient::addBuddy(const std::stri
 	buddyListEntry *result = NULL;
 	buddyListMap::iterator iter = mBuddyListMap.find(uri);
 	
-	if(iter != mBuddyListMap.end())
+	if (iter != mBuddyListMap.end())
 	{
 		// Found a matching buddy already in the map.
 		LL_DEBUGS("Voice") << "adding existing buddy " << uri << LL_ENDL;
 		result = iter->second;
 	}
 
-	if(!result)
+	if (!result)
 	{
 		// participant isn't already in one list or the other.
 		LL_DEBUGS("Voice") << "adding new buddy " << uri << LL_ENDL;
 		result = new buddyListEntry(uri);
 		result->mDisplayName = displayName;
 
-		if(IDFromName(uri, result->mUUID)) 
-		{
-			// Extracted UUID from name successfully.
-		}
-		else
+		if (!IDFromName(uri, result->mUUID))
 		{
 			LL_DEBUGS("Voice") << "Couldn't find ID for buddy " << uri << " (\"" << displayName << "\")" << LL_ENDL;
 		}
@@ -7272,7 +7251,7 @@ void LLVivoxProtocolParser::StartTag(const char *tag, const char **attr)
 void LLVivoxProtocolParser::EndTag(const char *tag)
 {
 	const std::string& string = textBuffer;
-	
+
 	responseDepth--;
 	
 	if (ignoringTags)
@@ -7371,6 +7350,8 @@ void LLVivoxProtocolParser::EndTag(const char *tag)
 		}
 		else if (!stricmp("Buddy", tag))
 		{
+            // NOTE : Vivox does *not* give reliable display name for Buddy tags
+            // We don't take those very seriously as a result...
 			LLVivoxVoiceClient::getInstance()->processBuddyListEntry(uriString, displayNameString);
 		}
 		else if (!stricmp("BlockRule", tag))
diff --git a/indra/newview/llvoicevivox.h b/indra/newview/llvoicevivox.h
index 574027de42eba7ed61a990cc93d635a1a80143c6..a6f40eb3e99d8e2adca4c5d08dd147a2a2cb8b4d 100644
--- a/indra/newview/llvoicevivox.h
+++ b/indra/newview/llvoicevivox.h
@@ -584,7 +584,6 @@ class LLVivoxVoiceClient :	public LLSingleton<LLVivoxVoiceClient>,
 		bool mNameResolved;
 		bool mInSLFriends;
 		bool mInVivoxBuddies;
-		bool mNeedsNameUpdate;
 	};
 
 	typedef std::map<std::string, buddyListEntry*> buddyListMap;
diff --git a/indra/newview/skins/default/xui/en/floater_im_session.xml b/indra/newview/skins/default/xui/en/floater_im_session.xml
index e081ea8e748805891006388602834005f744378e..d8b085063f7bfd3445f110a8b16edaf1130901b6 100644
--- a/indra/newview/skins/default/xui/en/floater_im_session.xml
+++ b/indra/newview/skins/default/xui/en/floater_im_session.xml
@@ -14,7 +14,6 @@
  width="394"
  can_resize="true"
  can_tear_off="false"
- min_width="340"
  min_height="190"
  positioning="relative">
     <floater.string name="call_btn_start">Conv_toolbar_open_call</floater.string>
@@ -223,9 +222,10 @@
     <layout_panel
       name="speakers_list_panel"
       follows="all"
-      min_width="115"
+      expanded_min_dim="115"
+      min_dim="0"
       width="150" 
-      height="275" 
+      height="275"
       user_resize="true"
       auto_resize="false">
       </layout_panel>
@@ -241,7 +241,7 @@
        user_resize="true"
        auto_resize="true"
        visible="true"
-       name="left_part_holder"
+       name="right_part_holder"
        min_width="221">
         <panel
          name="trnsAndChat_panel"
@@ -266,6 +266,7 @@
           left="0">
             <layout_panel
              auto_resize="false"
+             user_resize="false"
              height="26"
              layout="topleft"
              left_delta="0"
@@ -285,7 +286,6 @@
                  width="230" />
             </layout_panel>
             <layout_panel
-             height="233"
              width="210"
              layout="topleft"
              follows="all"
@@ -293,19 +293,21 @@
              top_delta="0"
              bottom="0"
              visible="true"
-             user_resize="true"
+             user_resize="false"
              auto_resize="true"
              name="chat_holder">      
                <chat_history
                 font="SansSerifSmall"
                 follows="all"
                 visible="true"
-                height="225"
                 name="chat_history"
                 parse_highlights="true"
                 parse_urls="true"
+                layout="topleft"
                 right="-5"
-                left="5">
+                left="5"
+                top="0"
+                bottom="1">
                </chat_history>
             </layout_panel>
            </layout_stack>
@@ -348,7 +350,6 @@
              auto_resize="true"
              name="input_editor_layout_panel">
               <chat_editor
-             top="6"
              expand_lines_count="5"
              follows="left|right|bottom"
                font="SansSerifSmall"
@@ -363,6 +364,7 @@
              spellcheck="true"
              tab_group="3"
              width="160"
+             top="6"
              left="5"
              right="-5"
              wrap="true">