I don't play on the ptr much so iunno if this is normal but every time i alt tabbed out and back into wow the textures of everything around me would screw up. Some of em looked pretty funny. If this is normal then ignore me, if not, look at the silly stormwind.

http://i9.photobucket.com/albums/a64/FireBolt64/WoWScrnShot_090109_174433.jpg
http://i9.photobucket.com/albums/a64/FireBolt64/WoWScrnShot_090109_174501.jpg
http://i9.photobucket.com/albums/a64/FireBolt64/WoWScrnShot_090109_174549.jpg
http://i9.photobucket.com/albums/a64/FireBolt64/WoWScrnShot_090109_174701-1.jpg