Since today, I have had two crashes already on my brand new MBP15 i7 which was running fine before. It seems not to be the freeze issue that others report, mine are true kernel panics. I've installed today, Java 10.6 update 2 - I don't think it's the culprit but that's all I had changed despite gfxCardStatus but I've disabled that after the first crash. On reboot, it looks like nVidia driver functions are high up on the call stack. Backtrace (CPU 2), Frame : Return Address (4 potential args on stack) 0xba1fbbd8 : 0x21b449 (0x5cf438 0xba1fbc0c 0x2238a5 0x0) 0xba1fbc28 : 0x9cedd4 (0xbd63dc 0xc43da0 0xbe3b48 0x0) 0xba1fbcc8 : 0xade983 (0xe2eec04 0xe89f004 0x100 0x0) 0xba1fbd18 : 0xad6659 (0xe89f004 0x100 0xba1fbd48 0x9bfc84) 0xba1fbd48 : 0x1690a4d (0xe89f004 0x100 0x438004ee 0x226bf9) 0xba1fbe88 : 0xafc2aa (0xe89f004 0xea08004 0x0 0x0) 0xba1fbec8 : 0x9d7e7e (0xe89f004 0xea08004 0x0 0x0) 0xba1fbf08 : 0x5488e3 (0x0 0xea23980 0x1 0x29d54e) 0xba1fbf58 : 0x547914 (0xea23980 0x1903 0x0 0x0) 0xba1fbf88 : 0x547d6e (0xe06e180 0x0 0x800 0x1903) 0xba1fbfc8 : 0x29e6cc (0xe06e180 0x0 0x10 0xd9d4820) Kernel Extensions in backtrace (with dependencies): com.apple.nvidia.nv50hal(6.1.0)@0x1559000->0x1976fff dependency: com.apple.NVDAResman(6.1.0)@0x96c000 com.apple.NVDAResman(6.1.0)@0x96c000->0xc44fff dependency: com.apple.iokit.IOPCIFamily(2.6)@0x92d000 dependency: com.apple.iokit.IONDRVSupport(2.1)@0x95f000 dependency: com.apple.iokit.IOGraphicsFamily(2.1)@0x93e000 Anyone else has a similar problem? Thanks, Tom PS: The system was a bit loaded both times it happened, once it was a timemachine backup, the other time it was mds/email syncing a larger folder.