I will have to look into Avast v4.5 but if your Norton is up to date and it found no trojans or spyware something is not right. Make sure all your spyware and virus programs have the newest database updates. Formatting your harddrive is a drastic measure. Be wary of where you download programs like Avast. It's very easy to replicate the download interface and actually install a virus or spyware from that download. I trust very few sites for downloading. Cnet or the actuall site would be my suggestion. And double verify the actual site of the product. Deception on the internet is as easy as cut and paste.
I think I did something stupid. I tried to unsubscribe form some of the junkmail that I get. After that I ran ad-aware, Norton, spybotsearch and destroy, and got rid of all thay said I had gotten. When I ran Avast v4.5, it listed a number of trojans, and adware that it say I now have (I didn't have them before). It couldn't get rid of some of the stuff. If I format my harddrive will it get rid of what is left over? I don't want to do this, cause the machine is running fine, but haven't done for about 7 months or so. If it helps, I am still using Millennium. Can I just run my system restore disk?