Alec,
This might be a bit irrelevant but i had trouble with my E4500 limiting at 334MHz FSB before i reseated the CPU a few times which gave me 360MHz, strange board the P5K Vanilla.
What memory are you using?
Ah thanks for the heads up. Yeah its just the ram holding me back now. FSB will go up fine, and so will ram but errors and stuff start creeping in and stuff. Not designed to be overclocked this stuff! its 667mhz <competitor name> value ram.