Aye Dave, I'm aware of the RAM issues with the board.
I'm thinking I'm gonna rule out the RAM as the cause. Went and picked up another stick of 256 PC2100 yesterday and slapped it in. Didna cure it. Played for a bit w/ no problems, went out for awhile, came back, played some more and boom. Set up Prime95 to run when I went to bed, it crapped out just shy of 2hours with a rounding error.