8600gt GPUv2 client help?

i've been trying to fold on my gpu for a couple days now and i keep getting 30-60% through a wu and get this message:

[14:56:51] Run: exception thrown during GuardedRun
[14:56:51] Run: exception thrown in GuardedRun -- Gromacs cannot continue further.
[14:56:51] Going to send back what have done -- stepsTotalG=15000000
[14:56:51] Work fraction=0.4324 steps=15000000.
[14:56:55] logfile size=18561 infoLength=18561 edr=0 trr=23
[14:56:55] - Writing 19097 bytes of core data to disk...
[14:56:55] Done: 18585 -> 4951 (compressed to 26.6 percent)
[14:56:55] ... Done.

i'm guessing that it thinks my card in unstable. i know for a fact however that it is perfectly stable. can run cod4 maxed out at 1400x900 for hours on end just fine and i played oblivion maxed the other day for over 8hrs with no down time.

any ideas ?????????????????