I recently uninstalled Norton and installed all the basic security programs from comodo firewall, CAVS, and BoClean. Thanks to the firewall I noticed some suspicious activity so I ran a CAVS scan which didn’t detect anything. A scan with AVG Anti-Spyware also found nothing. However, clamwin told me I had a Vundo trojan. Many hours of research later I found the Vundofix tool on the web and also discovered that the file syswin.exe running on my machine was also a trojan file.
Just a note that I like the products but CAVS missed these files. Also, since they were already on my system BoClean didn’t pick them up (at least that’s hoping why I it didn’t).