i remember some ppl posting about probs with 3com but i think that was with their router, not nic. wish there was something i could suggest beyond what has already been tried. this does seem to effect 2k and xp users more than anyone else, and i wouldnt know what to tell you to check after your reformat. i think you said it happens with another chat client as well?

ParaBrat @#mIRCAide DALnet