aglennon, ady4um, alfun, OP's crash in HPT366.sys driver was firstly reported in avast in July 2011; I forwarded to our co-worker and I thought it was already fixed somehow; unfortunately, we don't have such hw device to reproduce this bug so we fixed it in today's virus database update. I'm really sorry for the delay - I didn't know, it wasn't fixed yet.
DavidR, you're absolutely right

, you can send me minidumps to my email (with link to a particular forum post) or upload kerneldump to our ftp and send me email
Tech, your dump was assigned to lukor, who is responsible for network drivers and who should take care of you, please send him email to get analysis of your dumps, thanks.