I knew you had to reformatted your HD now I can see you have Mozilla Fire Fox

You can install the following list and they work with Mozilla too for extra protection, and it does help believe you won’t be sorry.

  1. SpywareBlaster v3.1 and get the latest patch enable all protection.

  2. SpywareGuard v2.2 and get the latest patch enable all protection.

Have you got Ad-aware and Spybot - Search & Destroy v1.2 and get the latest patch and kill everything, for more information about SpywareBlaster and SpywareGuard here is the link http://www.javacoolsoftware.com/products.html

Finally you haven’t told me what firewall are you using I strongly recommend ZoneAlarm free version or buy the Pro version.