mine: Your CPU temps look good and shouldn't be causing a problem. Most memory scales upward with more voltage but from what I've read about the Apogee, it doesn't need extra voltage like the Micron D9 chips do. TweakTown didn't really gain anything by going beyond the rated 2.1 volts when they tested some DDR2-1150 Apogee GT 2x2GB modules last month. Have you ever tried slowing your memory down and running it 1:1 with CL4 or CL5 timings when checking stability? I've always preferred that to big memory MHz numbers on this board.

Maybe the next bios release will help with E0 compatibility. I'm pretty happy with how my E8400 - C0 runs now on the P5B Deluxe but I haven't tried using a 45nm E0, Dual or Quad on the P5B so I guess I can't help you. One board has lasted me for the entire Core CPU generation so I can survive now until Core i7 comes out.