Just out of curiosity, are you running pc133 ram or higher,
i now have 2 sticks of 256mb each, both are pc133 ... (running at 100 now thru the BIOS)
and are you running pretested ram or just generic stuff??
fwiw ; both came with a 10yr guarantee ... one has Samsung ic's, other has M.Tec (with a White Lake label).
before that i had 2 sticks of pc133 128mb, both Infineon (Fujitsu Siemens) and the same problems ...
Goner