Yeah, my E2140 (L2) refuses to be stable at 3.0GHz. It is stable at 2.8GHz however, so I'm keeping it there for now.
350x8, 1:1 with RAM
1.325V (stock)
VDIMM and VTT up one notch
Abit IP35-E
Is your E2180 an M0 stepping? That's a pretty good overclock there.