I also notice in Chrome, when its finding a page it says "resolving proxy" for a few seconds at the bottom as its loading.
I downloaded MalwareBytes and managed to run it after changing the name of the program (it wouldn't run otherwise.) It found one nasty as well as some adware stuff, deleted it, but the issue with my browser closing by itself is still going on. I just entered "combofix" into google in FF, hit enter, and my browser shut down.
I am running Symantec Corporate Edition, supposed to scan in the background.
Edit: I posted my question in the Malware removal forum with more complete info.
Edited by jennbryn, 25 March 2009 - 05:12 PM.