[The Toad]

If you are using MS Internet Explorer--especially if it's an older version--consider using something else. Computers running IE are typically a target for viruses. Consider using another browser such as FireFox.

Also have a good Firewall and Antivirus running. The ones built-in to Microsoft are okay, but there are a number of free ones that are superior.

[Professional]

That crazy set of problems I had, it hijacked the mozilla firefox browser as well as the IE I was using.