i set the bios to 11.5x200 effectively making it 2300mhz (thats right yea?). anyhow i dont know if it was due to this, due to my ineffective insertion/handling of the ram, or if i just got sticks of ram that just went bad ... but i had to RMA a 512 stick of crucial and i'm RMA'ing my 512 stick of kingston. only my original really old 256 stick of crucial has remained rock solid. the kingston one failed the stride6 microsoft memory test if that means anything? anyhow, i was just wondering if this could have been due to overclcoking? they're pc2100 sticks, btw. the rest of my system specs are in "my rig" below. i've put my system back down to stock speed because i dont want to blow out the "new" crucial stick and be stuck running on 256mb of ram. but i'd like to overclock again. 
Don
Don