agree with all the above. HAve crashed at least 150 times with this system I built. After all the changes made above, the one thing that really made a difference, and I mean 1 was adding 2gigs of memory. P5 of course sucks all that up as well, but I have not crashed once. 512 was not enough. It worked sometimes and fooled me. Los Alamos Comp. make good models to get ideas from