Since yesterday all my programs crash after starting them or after a few moments of usage. If I reboot, all my icons (the ones in the menubar and on buttons, for example in Safari) disappear, this fixes itself after a boot in Safe Mode. The weird thing is that not every program crashes directly. But when I use my Cinema Display every program crashes after I drag them from that display to my Macbook display. Here are a few Crash Reports: http://pastebin.com/hqsFWUav Edit: Another weird thing: The application don't crash when I run them in GDB.. Also, I don't get crashes when using another account.