diff --git a/indra/llcommon/llthread.cpp b/indra/llcommon/llthread.cpp
index a56c3f7a51..8c5ff50a56 100644
--- a/indra/llcommon/llthread.cpp
+++ b/indra/llcommon/llthread.cpp
@@ -358,8 +358,9 @@ void LLThread::setQuitting()
     {
         mStatus = QUITTING;
     }
+    // It's only safe to remove mRunCondition if all locked threads were notified
+    mRunCondition->broadcast();
     mDataLock->unlock();
-    wake();
 }
 
 // static
diff --git a/indra/llcorehttp/_httpreplyqueue.cpp b/indra/llcorehttp/_httpreplyqueue.cpp
index 2b138f3ad5..229bfdbe07 100644
--- a/indra/llcorehttp/_httpreplyqueue.cpp
+++ b/indra/llcorehttp/_httpreplyqueue.cpp
@@ -56,7 +56,6 @@ void HttpReplyQueue::addOp(const HttpReplyQueue::opPtr_t &op)
 
 		mQueue.push_back(op);
 	}
-	mQueueCV.notify_all();
 }
 
 
diff --git a/indra/llcorehttp/_httpreplyqueue.h b/indra/llcorehttp/_httpreplyqueue.h
index 928ee10a83..33e205c1c9 100644
--- a/indra/llcorehttp/_httpreplyqueue.h
+++ b/indra/llcorehttp/_httpreplyqueue.h
@@ -98,7 +98,6 @@ protected:
 
 	OpContainer							mQueue;
 	LLCoreInt::HttpMutex				mQueueMutex;
-	LLCoreInt::HttpConditionVariable	mQueueCV;
 	
 }; // end class HttpReplyQueue
 
diff --git a/indra/llcorehttp/_httprequestqueue.cpp b/indra/llcorehttp/_httprequestqueue.cpp
index c6f4ad789f..ad72bdcce6 100644
--- a/indra/llcorehttp/_httprequestqueue.cpp
+++ b/indra/llcorehttp/_httprequestqueue.cpp
@@ -142,13 +142,19 @@ void HttpRequestQueue::wakeAll()
 }
 
 
-void HttpRequestQueue::stopQueue()
+bool HttpRequestQueue::stopQueue()
 {
 	{
 		HttpScopedLock lock(mQueueMutex);
 
-		mQueueStopped = true;
-		wakeAll();
+        if (!mQueueStopped)
+        {
+            mQueueStopped = true;
+            wakeAll();
+            return true;
+        }
+        wakeAll();
+        return false;
 	}
 }
 
diff --git a/indra/llcorehttp/_httprequestqueue.h b/indra/llcorehttp/_httprequestqueue.h
index 3c3d134b07..f0296f30e3 100644
--- a/indra/llcorehttp/_httprequestqueue.h
+++ b/indra/llcorehttp/_httprequestqueue.h
@@ -124,7 +124,7 @@ public:
 	/// them on their way.
 	///
 	/// Threading:  callable by any thread.
-	void stopQueue();
+	bool stopQueue();
 	
 protected:
 	static HttpRequestQueue *			sInstance;
diff --git a/indra/llcorehttp/_httpservice.cpp b/indra/llcorehttp/_httpservice.cpp
index 34268d94f6..56f52f1b09 100644
--- a/indra/llcorehttp/_httpservice.cpp
+++ b/indra/llcorehttp/_httpservice.cpp
@@ -87,7 +87,11 @@ HttpService::~HttpService()
 		// is a bit tricky.
 		if (mRequestQueue)
 		{
-			mRequestQueue->stopQueue();
+            if (mRequestQueue->stopQueue())
+            {
+                // Give mRequestQueue a chance to finish
+                ms_sleep(10);
+            }
 		}
 		
 		if (mThread)
diff --git a/indra/newview/llappearancemgr.cpp b/indra/newview/llappearancemgr.cpp
index e7dafbb7b8..8b4d9452e4 100644
--- a/indra/newview/llappearancemgr.cpp
+++ b/indra/newview/llappearancemgr.cpp
@@ -4101,7 +4101,7 @@ void LLAppearanceMgr::serverAppearanceUpdateCoro(LLCoreHttpUtil::HttpCoroutineAd
     }
 
     llcoro::suspend();
-    if (LLApp::isQuitting())
+    if (LLApp::isExiting())
     {
         return;
     }
@@ -4168,7 +4168,7 @@ void LLAppearanceMgr::serverAppearanceUpdateCoro(LLCoreHttpUtil::HttpCoroutineAd
 
         LLSD result = httpAdapter->postAndSuspend(httpRequest, url, postData);
 
-        if (LLApp::isQuitting())
+        if (LLApp::isExiting())
         {
             return;
         }
@@ -4208,7 +4208,7 @@ void LLAppearanceMgr::serverAppearanceUpdateCoro(LLCoreHttpUtil::HttpCoroutineAd
                 LL_WARNS("Avatar") << "Bake retry #" << retryCount << " in " << timeout << " seconds." << LL_ENDL;
 
                 llcoro::suspendUntilTimeout(timeout); 
-                if (LLApp::isQuitting())
+                if (LLApp::isExiting())
                 {
                     return;
                 }
diff --git a/indra/newview/llcompilequeue.cpp b/indra/newview/llcompilequeue.cpp
index 49b07a0ac7..07cdecf920 100644
--- a/indra/newview/llcompilequeue.cpp
+++ b/indra/newview/llcompilequeue.cpp
@@ -449,7 +449,7 @@ void LLFloaterCompileQueue::processExperienceIdResults(LLSD result, LLUUID paren
 bool LLFloaterCompileQueue::processScript(LLHandle<LLFloaterCompileQueue> hfloater,
     const LLPointer<LLViewerObject> &object, LLInventoryObject* inventory, LLEventPump &pump)
 {
-    if (LLApp::isQuitting())
+    if (LLApp::isExiting())
     {
         // Reply from coroutine came on shutdown
         // We are quiting, don't start any more coroutines!
diff --git a/indra/newview/lldelayedgestureerror.cpp b/indra/newview/lldelayedgestureerror.cpp
index ef1b644ad4..934a38bb8e 100644
--- a/indra/newview/lldelayedgestureerror.cpp
+++ b/indra/newview/lldelayedgestureerror.cpp
@@ -113,7 +113,7 @@ bool LLDelayedGestureError::doDialog(const LLErrorEntry &ent, bool uuid_ok)
 		}
 	}
 	 
-	if(!LLApp::isQuitting())
+	if(!LLApp::isExiting())
 	{
 		LLNotificationsUtil::add(ent.mNotifyName, args);
 	}
diff --git a/indra/newview/llmeshrepository.cpp b/indra/newview/llmeshrepository.cpp
index fc9b5174d7..da4637e7dc 100644
--- a/indra/newview/llmeshrepository.cpp
+++ b/indra/newview/llmeshrepository.cpp
@@ -905,7 +905,7 @@ void LLMeshRepoThread::run()
 		LL_WARNS(LOG_MESH) << "Convex decomposition unable to be loaded.  Expect severe problems." << LL_ENDL;
 	}
 
-	while (!LLApp::isQuitting())
+	while (!LLApp::isExiting())
 	{
 		// *TODO:  Revise sleep/wake strategy and try to move away
 		// from polling operations in this thread.  We can sleep
@@ -922,7 +922,7 @@ void LLMeshRepoThread::run()
 		
 		mSignal->wait();
 
-		if (LLApp::isQuitting())
+		if (LLApp::isExiting())
 		{
 			break;
 		}
@@ -1192,7 +1192,7 @@ void LLMeshRepoThread::loadMeshPhysicsShape(const LLUUID& mesh_id)
 
 void LLMeshRepoThread::lockAndLoadMeshLOD(const LLVolumeParams& mesh_params, S32 lod)
 {
-	if (!LLAppViewer::isQuitting())
+	if (!LLAppViewer::isExiting())
 	{
 		loadMeshLOD(mesh_params, lod);
 	}
@@ -2753,7 +2753,7 @@ void LLMeshUploadThread::doWholeModelUpload()
 			LL_DEBUGS(LOG_MESH) << "POST request issued." << LL_ENDL;
 			
 			mHttpRequest->update(0);
-			while (! LLApp::isQuitting() && ! finished() && ! isDiscarded())
+			while (! LLApp::isExiting() && ! finished() && ! isDiscarded())
 			{
 				ms_sleep(sleep_time);
 				sleep_time = llmin(250U, sleep_time + sleep_time);
@@ -2802,7 +2802,7 @@ void LLMeshUploadThread::requestWholeModelFee()
 		U32 sleep_time(10);
 		
 		mHttpRequest->update(0);
-		while (! LLApp::isQuitting() && ! finished() && ! isDiscarded())
+		while (! LLApp::isExiting() && ! finished() && ! isDiscarded())
 		{
 			ms_sleep(sleep_time);
 			sleep_time = llmin(250U, sleep_time + sleep_time);
@@ -3251,7 +3251,7 @@ common_exit:
 
 LLMeshHeaderHandler::~LLMeshHeaderHandler()
 {
-	if (!LLApp::isQuitting())
+	if (!LLApp::isExiting())
 	{
 		if (! mProcessed)
 		{
@@ -3395,7 +3395,7 @@ void LLMeshHeaderHandler::processData(LLCore::BufferArray * /* body */, S32 /* b
 
 LLMeshLODHandler::~LLMeshLODHandler()
 {
-	if (! LLApp::isQuitting())
+	if (! LLApp::isExiting())
 	{
 		if (! mProcessed)
 		{
@@ -3665,7 +3665,7 @@ void LLMeshRepository::shutdown()
 		mUploads[i]->discard() ; //discard the uploading requests.
 	}
 
-	mThread->mSignal->signal();
+	mThread->mSignal->broadcast();
 	
 	while (!mThread->isStopped())
 	{
@@ -4907,7 +4907,8 @@ void LLPhysicsDecomp::shutdown()
 	if (mSignal)
 	{
 		mQuitting = true;
-		mSignal->signal();
+		// There is only one wait(), but just in case 'broadcast'
+		mSignal->broadcast();
 
 		while (!isStopped())
 		{
diff --git a/indra/newview/lloutfitgallery.cpp b/indra/newview/lloutfitgallery.cpp
index 5586c8db4d..fa5187dce6 100644
--- a/indra/newview/lloutfitgallery.cpp
+++ b/indra/newview/lloutfitgallery.cpp
@@ -1121,7 +1121,7 @@ void LLOutfitGallery::refreshOutfit(const LLUUID& category_id)
         }
     }
     
-    if (mGalleryCreated && !LLApp::isQuitting())
+    if (mGalleryCreated && !LLApp::isExiting())
     {
         reArrangeRows();
     }
diff --git a/indra/newview/lltoolmgr.cpp b/indra/newview/lltoolmgr.cpp
index ae6547b77e..7fea202ee0 100644
--- a/indra/newview/lltoolmgr.cpp
+++ b/indra/newview/lltoolmgr.cpp
@@ -450,7 +450,7 @@ void LLToolMgr::clearTransientTool()
 
 void LLToolMgr::onAppFocusLost()
 {
-	if (LLApp::isQuitting())
+	if (LLApp::isExiting())
 		return;
 
 	if (mSelectedTool)
diff --git a/indra/newview/llviewerassetstorage.cpp b/indra/newview/llviewerassetstorage.cpp
index 2f684960a8..a36c11db18 100644
--- a/indra/newview/llviewerassetstorage.cpp
+++ b/indra/newview/llviewerassetstorage.cpp
@@ -583,7 +583,7 @@ void LLViewerAssetStorage::assetRequestCoro(
 
     LLSD result = httpAdapter->getRawAndSuspend(httpRequest, url, httpOpts);
 
-    if (LLApp::isQuitting() || !gAssetStorage)
+    if (LLApp::isExiting() || !gAssetStorage)
     {
         // Bail out if result arrives after shutdown has been started.
         return;
diff --git a/indra/newview/llvoicevivox.cpp b/indra/newview/llvoicevivox.cpp
index c36875e1e7..f463ae8677 100644
--- a/indra/newview/llvoicevivox.cpp
+++ b/indra/newview/llvoicevivox.cpp
@@ -1438,6 +1438,11 @@ void LLVivoxVoiceClient::logoutOfVivox(bool wait)
 
                 result = llcoro::suspendUntilEventOnWithTimeout(mVivoxPump, LOGOUT_ATTEMPT_TIMEOUT, timeoutResult);
 
+                if (sShuttingDown)
+                {
+                    break;
+                }
+
                 LL_DEBUGS("Voice") << "event=" << ll_stream_notation_sd(result) << LL_ENDL;
                 // Don't get confused by prior queued events -- note that it's
                 // very important that mVivoxPump is an LLEventMailDrop, which
@@ -1873,7 +1878,7 @@ bool LLVivoxVoiceClient::waitForChannel()
 
         if (sShuttingDown)
         {
-            logoutOfVivox(true);
+            logoutOfVivox(false);
             return false;
         }
 
@@ -1968,9 +1973,9 @@ bool LLVivoxVoiceClient::waitForChannel()
 
         mIsProcessingChannels = false;
 
-        logoutOfVivox(true);
+        logoutOfVivox(!sShuttingDown /*bool wait*/);
 
-        if (mRelogRequested)
+        if (mRelogRequested && !sShuttingDown)
         {
             LL_DEBUGS("Voice") << "Relog Requested, restarting provisioning" << LL_ENDL;
             if (!provisionVoiceAccount())
diff --git a/indra/win_crash_logger/llcrashloggerwindows.cpp b/indra/win_crash_logger/llcrashloggerwindows.cpp
index 01763e7e05..7d2991d1ee 100644
--- a/indra/win_crash_logger/llcrashloggerwindows.cpp
+++ b/indra/win_crash_logger/llcrashloggerwindows.cpp
@@ -542,7 +542,7 @@ bool LLCrashLoggerWindows::frame()
 		
 		MSG msg;
 		memset(&msg, 0, sizeof(msg));
-		while (!LLApp::isQuitting() && GetMessage(&msg, NULL, 0, 0))
+		while (!LLApp::isExiting() && GetMessage(&msg, NULL, 0, 0))
 		{
 			TranslateMessage(&msg);
 			DispatchMessage(&msg);