Im @ 3.53 with new FW 1.0
No voltage adjustment
I have all but 2 die @ 500
2 die @ 475 to keep VRM alive
(still nekkid VRMs here)
After sleeping I noticed uptime is only 4 hours.
It must have restarted itself at some point.
WHILE TYPING THIS cgminer crashed.
Not the first time, I was typing 'I must have had a storm pass by..'
when it happened.
Now I blame new FW not nature.
cgminer restarts on its own, not a critical issue.
Shit happens, we are lucky to be allowed to find some of the bugs!

Thx KnCMiner.
YMMV

I got a cgminer dump and auto-restart as well (it ran very nicely, for 9 hours, at 3.585 Ths and 50080 WU).