[Neets]

The program that is causing that error is called "CommonName" (not to be confused with Common Files!!!).

I tried about 6 other spyware programs and could only get rid of it using PestPatrol.

[TaxRelief]

As Neets pointed out, Winnet.exe is the program "common name" which runs the CommonName Toolbar. It is an unstable program that eats up 90% of your CPU time. Getting rid of it will make surfing seem like a dream come true.

The only way to get rid of it, though, is to remove it in add/remove programs then run Spybot. You better get rid of iMesh and Kazaa, too, if you have them, so that it doesn't reinstall through them.