Any users out there that have a Titan or 6xx/7xx on their hackintosh and have installed 10.9.2 beta?
I get a grey screen and pointer, so after booting into safe mode I noticed these weird errors I've never seen before:
kernel[0]: NVDA(OpenGL): Channel exception! Exception type = 0x8 DMA Engine Error (FIFO Error

kernel[0]: 4443564e 00000108 9a02943e 261e5073 00000001 00000014 d3793533 46d3a4a6
kernel[0]: 4614f297 e71edccf 00088301 000000d1 12f2450a 08180a42 18001000 28002000
kernel[0]: 38003000 48004000 58005000 22006000 1001080a 02808e80 22000122 1001080d
...
or
NVDA(Private): Channel exception! Exception type = 0x8 DMA Engine Error (FIFO Error

4443564e 00000108 303fb5f8 38fcbe13 00000001 00000014 d3793533 46d3a4a6
4614f297 e71edccf 00088301 000000d2 12f2460a 08180a43 18001000 28002000
38003000 48004000 58005000 22006000 1001080a 02808e80 22000122 1001080d
02808a84 80810422 0c223098 84100108 22028180 0c828803 149a030a 821e0a00
00081b13 03182110 28098a20 4812abb3 58015000 90646001 01980101 8a030a1e
3d0a0013 0a3a1392 00002438 00000e00 02e00100 00164900 00000100 00144900
...