i trust you installed a heatsink on the permedia2 chip and had some form of fan keeping some kind of airflow going across that and the ram? early P2's had a habit of partially unsoldering themselves if not cooled plus the chip was only rated to 80C temperature. it could reach 79.8C on the heat sink if not cooled properly. just my expirience with the cybervisionPPC....
(if i am talking crap again please ignore anything i said)