Updated my MBP 15" from 10.6 to 10.9.2 and ever since I get crashes, some 4 to 5 a day. Mostly from wake up but sometimes out of the blue. panic(cpu 3 caller 0xffffff7f9f1b6fb0): "GPU Panic: [<None>] 3 3 7f 0 0 0 0 3 : NVRM[0/1:0:0]: Read Error 0x00000100: CFG 0xffffffff 0xffffffff 0xffffffff, BAR0 0xd2000000 0xffffff8131130000 0x0a5480a2, D0, P2/4\n"@/SourceCache/AppleGraphicsControl/AppleGraphicsControl-3.4.35/src/AppleMuxControl/kext/GPUPanic.cpp:127 Thats the log. Is there anything I can do to fix this? This has been going on for 2 months and I have googled crases and the sorts but nothing comes up.