diff --git a/source/glest_game/game/game.cpp b/source/glest_game/game/game.cpp
index 05b95156..637d0f28 100644
--- a/source/glest_game/game/game.cpp
+++ b/source/glest_game/game/game.cpp
@@ -1744,10 +1744,12 @@ void Game::render2d(){
 					10, metrics.getVirtualH() - mh - 90 - 210 - (i * 16), false);
 		}
 
-		if(renderer.getAllowRenderUnitTitles() == false) {
-			renderer.setAllowRenderUnitTitles(true);
+		if((renderer.getShowDebugUILevel() & debugui_unit_titles) == debugui_unit_titles) {
+			if(renderer.getAllowRenderUnitTitles() == false) {
+				renderer.setAllowRenderUnitTitles(true);
+			}
+			renderer.renderUnitTitles(coreData.getMenuFontNormal(),Vec3f(1.0f));
 		}
-		renderer.renderUnitTitles(coreData.getMenuFontNormal(),Vec3f(1.0f));
 	}
 
 	//network status
diff --git a/source/glest_game/graphics/renderer.cpp b/source/glest_game/graphics/renderer.cpp
index 17280f56..188be574 100644
--- a/source/glest_game/graphics/renderer.cpp
+++ b/source/glest_game/graphics/renderer.cpp
@@ -150,6 +150,7 @@ Renderer::Renderer() {
 	this->menu = NULL;
 	this->game = NULL;
 	showDebugUI = false;
+	showDebugUILevel = debugui_fps;
 	modelRenderer = NULL;
 	textRenderer = NULL;
 	particleRenderer = NULL;
@@ -2439,7 +2440,9 @@ void Renderer::renderSelectionEffects() {
 
 		//selection circle
 		if(world->getThisFactionIndex() == unit->getFactionIndex()) {
-			if(	showDebugUI == true && unit->getCommandSize() > 0 &&
+			if(	showDebugUI == true &&
+				((showDebugUILevel & debugui_unit_titles) == debugui_unit_titles) &&
+				unit->getCommandSize() > 0 &&
 				dynamic_cast<const BuildCommandType *>(unit->getCurrCommand()->getCommandType()) != NULL) {
 				glColor4f(unit->getHpRatio(), unit->getHpRatio(), unit->getHpRatio(), 0.3f);
 			}
@@ -4744,5 +4747,15 @@ Texture2D * Renderer::findFactionLogoTexture(string logoFilename) {
 	return result;
 }
 
+void Renderer::cycleShowDebugUILevel() {
+	if((showDebugUILevel & debugui_fps) != debugui_fps ||
+		(showDebugUILevel & debugui_unit_titles) != debugui_unit_titles) {
+		showDebugUILevel  |= debugui_fps;
+		showDebugUILevel  |= debugui_unit_titles;
+	}
+	else {
+		showDebugUILevel  = debugui_fps;
+	}
+}
 
 }}//end namespace
diff --git a/source/glest_game/graphics/renderer.h b/source/glest_game/graphics/renderer.h
index 1bf7d2af..be309270 100644
--- a/source/glest_game/graphics/renderer.h
+++ b/source/glest_game/graphics/renderer.h
@@ -42,6 +42,11 @@
 
 #include "leak_dumper.h"
 
+enum DebugUILevelType {
+	debugui_fps 		= 0x01,
+	debugui_unit_titles = 0x02
+};
+
 namespace Glest{ namespace Game{
 
 using namespace Shared::Graphics;
@@ -246,6 +251,7 @@ private:
 
 	bool no2DMouseRendering;
 	bool showDebugUI;
+	int showDebugUILevel;
 
 	int lastRenderFps;
 	float smoothedRenderFps;
@@ -412,6 +418,10 @@ public:
 	bool getShowDebugUI() const { return showDebugUI; }
 	void setShowDebugUI(bool value) { showDebugUI = value; }
 
+	int getShowDebugUILevel() const { return showDebugUILevel; }
+	void setShowDebugUILevel(int value) { showDebugUILevel=value; }
+	void cycleShowDebugUILevel();
+
 	void setLastRenderFps(int value);
 	int getLastRenderFps() const { return lastRenderFps;}
 
diff --git a/source/glest_game/main/main.cpp b/source/glest_game/main/main.cpp
index c0fefebe..9a2e273c 100644
--- a/source/glest_game/main/main.cpp
+++ b/source/glest_game/main/main.cpp
@@ -664,9 +664,15 @@ void MainWindow::eventKeyDown(char key){
 
 		Config &configKeys = Config::getInstance(std::pair<ConfigType,ConfigType>(cfgMainKeys,cfgUserKeys));
 		if(key == configKeys.getCharKey("HotKeyShowDebug")) {
+
 			Renderer &renderer= Renderer::getInstance();
-			bool showDebugUI = renderer.getShowDebugUI();
-			renderer.setShowDebugUI(!showDebugUI);
+			if(keystate.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
+				renderer.cycleShowDebugUILevel();
+			}
+			else {
+				bool showDebugUI = renderer.getShowDebugUI();
+				renderer.setShowDebugUI(!showDebugUI);
+			}
 		}
 		else if(key == configKeys.getCharKey("ReloadINI")) {
 			Config &config = Config::getInstance();
@@ -1579,6 +1585,7 @@ int glestMain(int argc, char** argv) {
             return -1;
         }
 
+        //setVBOSupported(false);
         // Explicitly disable VBO's
         if(config.getBool("DisableVBO","false") == true || hasCommandArgument(argc, argv,GAME_ARGS[GAME_ARG_DISABLE_VBO]) == true) {
         	setVBOSupported(false);
diff --git a/source/glest_game/menu/menu_state_custom_game.cpp b/source/glest_game/menu/menu_state_custom_game.cpp
index 5a6ff068..a37a84c9 100644
--- a/source/glest_game/menu/menu_state_custom_game.cpp
+++ b/source/glest_game/menu/menu_state_custom_game.cpp
@@ -513,7 +513,7 @@ MenuStateCustomGame::MenuStateCustomGame(Program *program, MainMenu *mainMenu, b
 
 	GraphicComponent::applyAllCustomProperties(containerName);
 
-	publishToMasterserverThread = new SimpleTaskThread(this,0,25);
+	publishToMasterserverThread = new SimpleTaskThread(this,0,200);
 	publishToMasterserverThread->setUniqueID(__FILE__);
 	publishToMasterserverThread->start();
 
diff --git a/source/glest_game/network/connection_slot.cpp b/source/glest_game/network/connection_slot.cpp
index ace659e2..bcc8f790 100644
--- a/source/glest_game/network/connection_slot.cpp
+++ b/source/glest_game/network/connection_slot.cpp
@@ -298,9 +298,13 @@ void ConnectionSlot::update(bool checkForNewClients,int lockedSlotIndex) {
 				if(serverInterface->getServerSocket() != NULL &&
 					serverInterface->getServerSocket()->hasDataToRead() == true) {
 					SystemFlags::OutputDebug(SystemFlags::debugNetwork,"In [%s::%s Line: %d] about to accept new client connection playerIndex = %d\n",__FILE__,__FUNCTION__,__LINE__,playerIndex);
-					socket = serverInterface->getServerSocket()->accept();
+					Socket *newSocket = serverInterface->getServerSocket()->accept();
 					SystemFlags::OutputDebug(SystemFlags::debugNetwork,"In [%s::%s Line: %d] called accept new client connection playerIndex = %d\n",__FILE__,__FUNCTION__,__LINE__,playerIndex);
-					if(socket != NULL) {
+					if(newSocket != NULL) {
+						// Set Socket as non-blocking
+						newSocket->setBlock(false);
+						socket = newSocket;
+
 						this->connectedTime = time(NULL);
 						this->clearChatInfo();
 						this->name = "";
diff --git a/source/glest_game/network/server_interface.cpp b/source/glest_game/network/server_interface.cpp
index 6944900d..c8e29b32 100644
--- a/source/glest_game/network/server_interface.cpp
+++ b/source/glest_game/network/server_interface.cpp
@@ -330,6 +330,8 @@ void ServerInterface::updateSlot(ConnectionSlotEvent *event) {
 		bool checkForNewClients = true;
 
 		// Safety check since we can experience a disconnect and the slot is NULL
+		//Chrono chrono;
+		//chrono.start();
 		ConnectionSlot *connectionSlot = NULL;
 		MutexSafeWrapper safeMutexSlot(NULL);
 		if(event->triggerId >= 0 && event->triggerId < GameConstants::maxPlayers) {
@@ -341,17 +343,29 @@ void ServerInterface::updateSlot(ConnectionSlotEvent *event) {
 			SystemFlags::OutputDebug(SystemFlags::debugError,"In [%s::%s Line: %d] ERROR CONDITION, event->triggerId = %d\n",__FILE__,__FUNCTION__,__LINE__,event->triggerId);
 		}
 
+		//if(chrono.getMillis() > 1) printf("In [%s::%s Line: %d] MUTEX LOCK held for msecs: %lld\n",__FILE__,__FUNCTION__,__LINE__,(long long int)chrono.getMillis());
+
 		if(connectionSlot != NULL &&
 		   (gameHasBeenInitiated == false ||
 			(connectionSlot->getSocket() != NULL && socketTriggered == true))) {
 			if(connectionSlot->isConnected() == false || socketTriggered == true) {
+				//if(chrono.getMillis() > 1) printf("In [%s::%s Line: %d] MUTEX LOCK held for msecs: %lld\n",__FILE__,__FUNCTION__,__LINE__,(long long int)chrono.getMillis());
+
+				safeMutexSlot.ReleaseLock(true);
 				connectionSlot->update(checkForNewClients,event->triggerId);
 
+				//chrono.start();
+				safeMutexSlot.Lock();
+				connectionSlot = slots[event->triggerId];
+
+				//if(chrono.getMillis() > 1) printf("In [%s::%s Line: %d] MUTEX LOCK held for msecs: %lld\n",__FILE__,__FUNCTION__,__LINE__,(long long int)chrono.getMillis());
+
 				// This means no clients are trying to connect at the moment
 				if(connectionSlot != NULL && connectionSlot->getSocket() == NULL) {
 					checkForNewClients = false;
 				}
 			}
+			//if(chrono.getMillis() > 1) printf("In [%s::%s Line: %d] MUTEX LOCK held for msecs: %lld\n",__FILE__,__FUNCTION__,__LINE__,(long long int)chrono.getMillis());
 		}
 		safeMutexSlot.ReleaseLock();
 	}
diff --git a/source/shared_lib/include/platform/sdl/thread.h b/source/shared_lib/include/platform/sdl/thread.h
index 7b9b4570..f7fa8a19 100644
--- a/source/shared_lib/include/platform/sdl/thread.h
+++ b/source/shared_lib/include/platform/sdl/thread.h
@@ -71,10 +71,11 @@ class Mutex {
 private:
 	SDL_mutex* mutex;
 	int refCount;
-
+	string ownerId;
 public:
-	Mutex();
+	Mutex(string ownerId="");
 	~Mutex();
+	void setOwnerId(string ownerId) { this->ownerId = ownerId; }
 	void p();
 	void v();
 	int getRefCount() const { return refCount; }
diff --git a/source/shared_lib/sources/graphics/model.cpp b/source/shared_lib/sources/graphics/model.cpp
index 3a794202..58ccd3ab 100644
--- a/source/shared_lib/sources/graphics/model.cpp
+++ b/source/shared_lib/sources/graphics/model.cpp
@@ -83,12 +83,18 @@ void Mesh::end() {
 	ReleaseVBOs();
 
 	delete [] vertices;
+	vertices=NULL;
 	delete [] normals;
+	normals=NULL;
 	delete [] texCoords;
+	texCoords=NULL;
 	delete [] tangents;
+	tangents=NULL;
 	delete [] indices;
+	indices=NULL;
 
 	delete interpolationData;
+	interpolationData=NULL;
 
 	if(textureManager != NULL) {
 		for(int i = 0; i < meshTextureCount; ++i) {
@@ -109,11 +115,15 @@ void Mesh::buildInterpolationData(){
 }
 
 void Mesh::updateInterpolationData(float t, bool cycle) {
-	interpolationData->update(t, cycle);
+	if(interpolationData != NULL) {
+		interpolationData->update(t, cycle);
+	}
 }
 
 void Mesh::updateInterpolationVertices(float t, bool cycle) {
-	interpolationData->updateVertices(t, cycle);
+	if(interpolationData != NULL) {
+		interpolationData->updateVertices(t, cycle);
+	}
 }
 
 void Mesh::BuildVBOs() {
@@ -155,6 +165,9 @@ void Mesh::BuildVBOs() {
 			delete [] normals; normals = NULL;
 			delete [] indices; indices = NULL;
 
+			delete interpolationData;
+			interpolationData = NULL;
+
 			hasBuiltVBOs = true;
 		}
 	}
@@ -167,6 +180,7 @@ void Mesh::ReleaseVBOs() {
 			glDeleteBuffersARB( 1, &m_nVBOTexCoords );					// Get A Valid Name
 			glDeleteBuffersARB( 1, &m_nVBONormals );					// Get A Valid Name
 			glDeleteBuffersARB( 1, &m_nVBOIndexes );					// Get A Valid Name
+			hasBuiltVBOs = false;
 		}
 	}
 }
diff --git a/source/shared_lib/sources/platform/posix/socket.cpp b/source/shared_lib/sources/platform/posix/socket.cpp
index 7f1ad5a3..54a7cdee 100644
--- a/source/shared_lib/sources/platform/posix/socket.cpp
+++ b/source/shared_lib/sources/platform/posix/socket.cpp
@@ -1072,6 +1072,7 @@ int Socket::send(const void *data, int dataSize) {
 #else
                 bytesSent = ::send(sock, (const char *)data, dataSize, MSG_NOSIGNAL | MSG_DONTWAIT);
 #endif
+                safeMutex.ReleaseLock();
 
                 SystemFlags::OutputDebug(SystemFlags::debugNetwork,"In [%s::%s Line: %d] #2 EAGAIN during send, trying again returned: %d\n",__FILE__,__FUNCTION__,__LINE__,bytesSent);
 
@@ -1113,6 +1114,8 @@ int Socket::send(const void *data, int dataSize) {
 #else
 			    bytesSent = ::send(sock, &sendBuf[totalBytesSent], dataSize - totalBytesSent, MSG_NOSIGNAL | MSG_DONTWAIT);
 #endif
+			    safeMutex.ReleaseLock();
+
                 if(bytesSent > 0) {
                 	totalBytesSent += bytesSent;
                 }
@@ -1186,6 +1189,7 @@ int Socket::receive(void *data, int dataSize) {
 	        else if(Socket::isReadable() == true) {
 	        	MutexSafeWrapper safeMutex(&dataSynchAccessor,string(__FILE__) + "_" + intToStr(__LINE__));
                 bytesReceived = recv(sock, reinterpret_cast<char*>(data), dataSize, 0);
+                safeMutex.ReleaseLock();
 
                 SystemFlags::OutputDebug(SystemFlags::debugNetwork,"In [%s::%s Line: %d] #2 EAGAIN during receive, trying again returned: %d\n",__FILE__,__FUNCTION__,__LINE__,bytesReceived);
 	        }
@@ -1207,7 +1211,7 @@ int Socket::peek(void *data, int dataSize) {
 
 	ssize_t err = 0;
 	if(isSocketValid() == true) {
-		MutexSafeWrapper safeMutex(&dataSynchAccessor,string(__FILE__) + "_" + intToStr(__LINE__));
+		MutexSafeWrapper safeMutex(&dataSynchAccessor,string(__FILE__) + "_" + intToStr(__LINE__) + "_" + intToStr(sock) + "_" + intToStr(dataSize));
 	    err = recv(sock, reinterpret_cast<char*>(data), dataSize, MSG_PEEK);
 	}
 	if(err < 0 && getLastSocketError() != PLATFORM_SOCKET_TRY_AGAIN) {
@@ -1217,7 +1221,7 @@ int Socket::peek(void *data, int dataSize) {
 		disconnectSocket();
 	}
 	else if(err < 0 && getLastSocketError() == PLATFORM_SOCKET_TRY_AGAIN) {
-		SystemFlags::OutputDebug(SystemFlags::debugNetwork,"In [%s::%s Line: %d] #1 EAGAIN during peek, trying again...\n",__FILE__,__FUNCTION__,__LINE__);
+		SystemFlags::OutputDebug(SystemFlags::debugNetwork,"In [%s::%s Line: %d] #1 ERROR EAGAIN during peek, trying again...\n",__FILE__,__FUNCTION__,__LINE__);
 
 	    time_t tStartTimer = time(NULL);
 	    while((err < 0 && getLastSocketError() == PLATFORM_SOCKET_TRY_AGAIN) &&
@@ -1232,6 +1236,7 @@ int Socket::peek(void *data, int dataSize) {
 	        else if(Socket::isReadable() == true) {
 	        	MutexSafeWrapper safeMutex(&dataSynchAccessor,string(__FILE__) + "_" + intToStr(__LINE__));
                 err = recv(sock, reinterpret_cast<char*>(data), dataSize, MSG_PEEK);
+                safeMutex.ReleaseLock();
 
                 SystemFlags::OutputDebug(SystemFlags::debugNetwork,"In [%s::%s Line: %d] #2 EAGAIN during peek, trying again returned: %d\n",__FILE__,__FUNCTION__,__LINE__,err);
 	        }
diff --git a/source/shared_lib/sources/platform/sdl/thread.cpp b/source/shared_lib/sources/platform/sdl/thread.cpp
index 80396a58..7c3c57d8 100644
--- a/source/shared_lib/sources/platform/sdl/thread.cpp
+++ b/source/shared_lib/sources/platform/sdl/thread.cpp
@@ -77,8 +77,9 @@ void Thread::resume() {
 //          Mutex
 // =====================================
 
-Mutex::Mutex() {
+Mutex::Mutex(string ownerId) {
     refCount=0;
+    this->ownerId = ownerId;
 	mutex = SDL_CreateMutex();
 	assert(mutex != NULL);
 	if(mutex == NULL) {
@@ -91,9 +92,15 @@ Mutex::Mutex() {
 Mutex::~Mutex() {
 	if(mutex == NULL) {
 		char szBuf[1024]="";
-		snprintf(szBuf,1023,"In [%s::%s Line: %d] mutex == NULL",__FILE__,__FUNCTION__,__LINE__);
+		snprintf(szBuf,1023,"In [%s::%s Line: %d] mutex == NULL refCount = %d owner [%s]",__FILE__,__FUNCTION__,__LINE__,refCount,ownerId.c_str());
 		throw runtime_error(szBuf);
 	}
+	else if(refCount >= 1) {
+		char szBuf[1024]="";
+		snprintf(szBuf,1023,"In [%s::%s Line: %d] about to destroy mutex refCount = %d owner [%s]",__FILE__,__FUNCTION__,__LINE__,refCount,ownerId.c_str());
+		throw runtime_error(szBuf);
+	}
+
 	SDL_DestroyMutex(mutex);
 	mutex=NULL;
 }
@@ -101,7 +108,7 @@ Mutex::~Mutex() {
 void Mutex::p() {
 	if(mutex == NULL) {
 		char szBuf[1024]="";
-		snprintf(szBuf,1023,"In [%s::%s Line: %d] mutex == NULL",__FILE__,__FUNCTION__,__LINE__);
+		snprintf(szBuf,1023,"In [%s::%s Line: %d] mutex == NULL refCount = %d owner [%s]",__FILE__,__FUNCTION__,__LINE__,refCount,ownerId.c_str());
 		throw runtime_error(szBuf);
 	}
 	SDL_mutexP(mutex);
@@ -111,7 +118,7 @@ void Mutex::p() {
 void Mutex::v() {
 	if(mutex == NULL) {
 		char szBuf[1024]="";
-		snprintf(szBuf,1023,"In [%s::%s Line: %d] mutex == NULL",__FILE__,__FUNCTION__,__LINE__);
+		snprintf(szBuf,1023,"In [%s::%s Line: %d] mutex == NULL refCount = %d owner [%s]",__FILE__,__FUNCTION__,__LINE__,refCount,ownerId.c_str());
 		throw runtime_error(szBuf);
 	}
 	refCount--;