diff --git a/src/Client/GUI/DrawObjMgr.cpp b/src/Client/GUI/DrawObjMgr.cpp
index 1b96688..cb10cc7 100644
--- a/src/Client/GUI/DrawObjMgr.cpp
+++ b/src/Client/GUI/DrawObjMgr.cpp
@@ -50,12 +50,12 @@ void DrawObjMgr::UnlinkAll(void)
 
 void DrawObjMgr::Update(void)
 {
-    ZThread::FastMutex mut;
+    //ZThread::FastMutex mut;
 
     // now for the threadsafe part: lock every thread except this one
     // to prevent obj ptr corruption caused by other running threads
     // TODO: lock only main thread (that should be the only one to delete objects anyway!)
-    mut.acquire();
+    //mut.acquire();
 
     // add objects waiting on the add queue to the real storage
     while(_add.size())
@@ -89,6 +89,6 @@ void DrawObjMgr::Update(void)
         i->second->Draw();
     }
 
-    mut.release();
+    //mut.release();
 
 }
diff --git a/src/Client/GUI/SceneWorld.cpp b/src/Client/GUI/SceneWorld.cpp
index 87a3f3b..ab4cb87 100644
--- a/src/Client/GUI/SceneWorld.cpp
+++ b/src/Client/GUI/SceneWorld.cpp
@@ -234,6 +234,7 @@ void SceneWorld::UpdateTerrain(void)
         logdebug("SceneWorld: Waiting until maps are loaded...");
         while(!mapmgr->Loaded())
             device->sleep(1);
+        logdebug("SceneWorld: ... maps done loading");
     }
 
     // TODO: as soon as WMO-only worlds are implemented, remove this!!
@@ -251,6 +252,7 @@ void SceneWorld::UpdateTerrain(void)
     // EDIT: it seems to display fine now, but i am still not sure if the way it is done is correct...
     mutex.acquire(); // prevent other threads from deleting the maptile
     logdebug("SceneWorld: Displaying MapTiles near grids x:%u y:%u",mapmgr->GetGridX(),mapmgr->GetGridY());
+    logdebug("Loaded maps: %u: %s",mapmgr->GetLoadedMapsCount(), mapmgr->GetLoadedTilesString().c_str());
     for(s32 tiley = 0; tiley < 3; tiley++)
     {
         for(s32 tilex = 0; tilex < 3; tilex++)
@@ -277,7 +279,7 @@ void SceneWorld::UpdateTerrain(void)
             }
             else
             {
-                logerror("SceneWorld: MapTile not loaded, can't apply heightmap!");
+                logerror("SceneWorld: MapTile (%u, %u) not loaded, can't apply heightmap!", mapmgr->GetGridX()+tilex, mapmgr->GetGridY()+tiley);
             }
         }
     }
@@ -310,15 +312,20 @@ void SceneWorld::UpdateTerrain(void)
 
     // to set the correct position of the terrain, we have to use the top-left tile's coords as terrain base pos
     MapTile *maptile = mapmgr->GetNearTile(-1, -1);
+    vector3df tpos(0,0,0); // height already managed when building up terrain (-> Y = always 0)
     if(maptile)
     {
-        vector3df tpos;
         tpos.X = -maptile->GetBaseX();
-        tpos.Y = 0; // height already managed when building up terrain
         tpos.Z = -maptile->GetBaseY();
-        logdebug("SceneWorld: Setting position of terrain (x:%.2f y:%.2f z:%.2f)", tpos.X, tpos.Y, tpos.Z); 
-        terrain->setPosition(tpos);
     }
+    else if(maptile = mapmgr->GetCurrentTile()) // this is tile (0, 0) in relative coords
+    {
+        logdebug("SceneWorld: Using alternative coords due to missing MapTile");
+        tpos.X = -(maptile->GetBaseX() + TILESIZE);
+        tpos.Y = -(maptile->GetBaseY() + TILESIZE);
+    }
+    logdebug("SceneWorld: Setting position of terrain (x:%.2f y:%.2f z:%.2f)", tpos.X, tpos.Y, tpos.Z); 
+    terrain->setPosition(tpos);
 
     logdebug("SceneWorld: Smoothing terrain normals...");
     terrain->smoothNormals();
diff --git a/src/Client/World/MapMgr.cpp b/src/Client/World/MapMgr.cpp
index 5fbe90f..ebbbc2a 100644
--- a/src/Client/World/MapMgr.cpp
+++ b/src/Client/World/MapMgr.cpp
@@ -55,6 +55,7 @@ void MapMgr::Update(float x, float y, uint32 m)
         _LoadNearTiles(_gridx,_gridy,m);
         _UnloadOldTiles();
     }
+    _mapsLoaded = true; // at this point, everything should be loaded (if maps existing)
 }
 
 void MapMgr::Flush(void)
@@ -67,6 +68,7 @@ void MapMgr::Flush(void)
 
 void MapMgr::_LoadNearTiles(uint32 gx, uint32 gy, uint32 m)
 {
+    _mapsLoaded = false;
     logdebug("MAPMGR: Loading near tiles for (%u, %u) map %u",gx,gy,m);
     for(uint32 v = gy-1; v <= gy+1; v++)
     {
@@ -75,11 +77,11 @@ void MapMgr::_LoadNearTiles(uint32 gx, uint32 gy, uint32 m)
             _LoadTile(h,v,m);
         }
     }
-    _mapsLoaded = true;
 }
 
 void MapMgr::_LoadTile(uint32 gx, uint32 gy, uint32 m)
 {
+    _mapsLoaded = false;
     if(!_tiles->TileExists(gx,gy))
     {
         if(TileExistsInFile(m,gx,gy))
@@ -121,11 +123,11 @@ void MapMgr::_LoadTile(uint32 gx, uint32 gy, uint32 m)
 
 void MapMgr::_UnloadOldTiles(void)
 {
-    for(uint32 gy=0; gy<64; gy++)
+    for(int32 gy=0; gy<64; gy++)
     {
-        for(uint32 gx=0; gx<64; gx++)
+        for(int32 gx=0; gx<64; gx++)
         {
-            if( (_gridx < gx-1 || _gridx > gx+1) && (_gridy < gy-1 || _gridy > gy+1) )
+            if( (int32(_gridx) < gx-1 || int32(_gridx) > gx+1) && (int32(_gridy) < gy-1 || int32(_gridy) > gy+1) )
             {
                 if(_tiles->GetTile(gx,gy))
                 {
@@ -199,4 +201,16 @@ float MapMgr::GetZ(float x, float y)
     logerror("MapMgr::GetZ() called for not loaded MapTile (%u, %u) for (%f, %f)",gcoords.x,gcoords.y,x,y);
     return 0;*/
 }
- 
+
+std::string MapMgr::GetLoadedTilesString(void)
+{
+    std::stringstream s;
+    for(uint32 x = 0; x < 64; x++)
+    {
+        for(uint32 y = 0; y < 64; y++)
+            if(_tiles->GetTile(x,y))
+                s << "(" << x << "|" << y << ") ";
+    }
+    return s.str();
+}
+
diff --git a/src/Client/World/MapMgr.h b/src/Client/World/MapMgr.h
index 9f23cc7..2f8cc6c 100644
--- a/src/Client/World/MapMgr.h
+++ b/src/Client/World/MapMgr.h
@@ -27,6 +27,7 @@ public:
     MapTile *GetNearTile(int32, int32);
     inline bool Loaded(void) { return _mapsLoaded; }
     uint32 GetLoadedMapsCount(void);
+    std::string GetLoadedTilesString(void);
     inline uint32 GetGridX(void) { return _gridx; }
     inline uint32 GetGridY(void) { return _gridy; }