So suddenly a strange thing has been happening - when i'm on the Internet (Firefox) typing or pages are loading (and possibly when everythin'gs quiet) Something is readng off my hard divre and my computer freezes up for a few seconds. This happens once every two minutes or so... it's annoying. It doesn't happen when i'm doing non-Internet related activities.
Any idea how I can figure out what this is? I tried Ad aware, Spybot SD and a virus scan, ad they didn't find nothing