OS 10.6.8
12G Ram
GTX 9600 for GUI
GTX 480 for CUDA
8.2.2 was running smooth two weeks ago, which as I said, switched back and forth between v9.0b2 and v8.2.2, for more than 10 times.
Today was the first time I switch back to v8.2.2 after upgrade to v9.0b3, and everything just failed.
OS/System were the same, nothing changed.