Six minutes and nine seconds, I've never had a unit die that quickly, and I've not had one on this rig at all before now 
[20:49:58] Preparing to commence simulation
[20:49:58] - Looking at optimizations...
[20:49:58] - Created dyn
[20:49:58] - Files status OK
[20:49:58] - Expanded 130377 -> 651613 (decompressed 499.7 percent)
[20:49:58] - Starting from initial work packet
[20:49:58]
[20:49:58] Project: 2056 (Run 37, Clone 5, Gen 60)
[20:49:58]
[20:49:58] Assembly optimizations on if available.
[20:49:58] Entering M.D.
[20:50:05] Protein: p2056_abeta_4mer
[20:50:05]
[20:50:05] Writing local files
[20:50:05] Using table 1
[20:50:05] Extra SSE boost OK.
[20:50:05] Writing local files
[20:50:05] Completed 0 out of 5000000 steps (0)
[20:56:14] Quit 101 - Fatal error:
[20:56:14] Step 13426, time 26.852 (ps) LINCS WARNING
[20:56:14] relative constraint deviation after LINCS:
[20:56:14] max 189.806885 (between atoms 264 and 265) rms 12.351166
[20:56:14]
[20:56:14] Simulation instability has been encountered. The run has entered a
[20:56:14] state from which no further progress can be made.
[20:56:14] This may be the correct result of the simulation, however if you
[20:56:14] often see other project units terminating early like this
[20:56:14] too, you may wish to check the stability of your computer (issues
[20:56:14] such as high temperature, overclocking, etc.).
[20:56:14] Going to send back what have done.
[20:56:14] logfile size: 7242
[20:56:14] - Writing 7925 bytes of core data to disk...
[20:56:14] ... Done.
[20:56:14]
[20:56:14] Folding@home Core Shutdown: EARLY_UNIT_END
[20:56:18] CoreStatus = 72 (114)
[20:56:18] Sending work to server
[20:49:58] Preparing to commence simulation
[20:49:58] - Looking at optimizations...
[20:49:58] - Created dyn
[20:49:58] - Files status OK
[20:49:58] - Expanded 130377 -> 651613 (decompressed 499.7 percent)
[20:49:58] - Starting from initial work packet
[20:49:58]
[20:49:58] Project: 2056 (Run 37, Clone 5, Gen 60)
[20:49:58]
[20:49:58] Assembly optimizations on if available.
[20:49:58] Entering M.D.
[20:50:05] Protein: p2056_abeta_4mer
[20:50:05]
[20:50:05] Writing local files
[20:50:05] Using table 1
[20:50:05] Extra SSE boost OK.
[20:50:05] Writing local files
[20:50:05] Completed 0 out of 5000000 steps (0)
[20:56:14] Quit 101 - Fatal error:
[20:56:14] Step 13426, time 26.852 (ps) LINCS WARNING
[20:56:14] relative constraint deviation after LINCS:
[20:56:14] max 189.806885 (between atoms 264 and 265) rms 12.351166
[20:56:14]
[20:56:14] Simulation instability has been encountered. The run has entered a
[20:56:14] state from which no further progress can be made.
[20:56:14] This may be the correct result of the simulation, however if you
[20:56:14] often see other project units terminating early like this
[20:56:14] too, you may wish to check the stability of your computer (issues
[20:56:14] such as high temperature, overclocking, etc.).
[20:56:14] Going to send back what have done.
[20:56:14] logfile size: 7242
[20:56:14] - Writing 7925 bytes of core data to disk...
[20:56:14] ... Done.
[20:56:14]
[20:56:14] Folding@home Core Shutdown: EARLY_UNIT_END
[20:56:18] CoreStatus = 72 (114)
[20:56:18] Sending work to server
I've just had 2 more fast EUE's on it. I've backed off the OC another 100Mhz, I hope that helps it 