I too now use firefox for most everything, Last week I went looking for a xxx password hack on one of my sites and forgot I had IE running instead and promptly picked up something like 26 troj and 896 (yes 896) trace "spy/virus/adware in under 2 minutes...
I took maybe 2 hours cleaning it all out, and that plus a retore fixed it well.
ONLY strange thing was ithe restore deleted my SIMS2 file and I had to reload the whole damm thing..
That has me bugged.
so ALWAYS try to run something other than IE. (Like my MAC)
PREGOPLANET
Ciera Sage XXX