no problem man, maybe your nb is getting undervolted thats also a comon problem or your nb is failing which would suck. what mobo are you running?
edit stupid question. anyway umm what are your northbridge temps @ 3.4
AFAIK I can't measure the NB temp.
As far as NB voltage settings I think I have like 1.2 1.4 1.55 and 1.70. I don't even know which is auto. I assume 1.20v is auto.
EDIT: Another thing I noticed is that my ram sticks are getting very hot to the touch. My hand obviously isn't a thermometer but they felt at least 60*C if not more.