Never had a problem with this computer until I upgraded to 10.7.4... Now I can't play any games on it; after about a minute it panics. Happens with any Valve game, WoW, and Diablo 3 and it's always in the apple.security.sandbox kext. And it happens every time I run a game, any game. Display is a Dell 3008. The running process is always mds (the spotlight indexing master). I also have an old 2600XT driving a couple of side screens that are only used for Terminal, Mail, VMs, etc. Thoughts? Is there any way to back out a system upgrade on OS X? Edit: I did do a disk and perm repair, and reset the PRAM. No go.