I was able to run SL the night before, and when I tried to log in in the morning, it was happening. I checked my graphic card, ran some test, and everything is fine. I tried Firestorm, Cool, and the LL viewer, and they all act the exact same way. I really don't know what is wrong. PC specs Phenom II X4 954 3.00 8.00GB ram Win 7 home premium 64 GeForce GTX 650