I installed Pest Patrol a while ago. Run it once, it found a couple of cookies and false positives. I then forgot about it, or so I thougth. Very surprisingly, if the computer was not attended it started IE with some site of the CA company. This is one of the reasons you run anti-spyware to avoid, very disappointing. I tried uninstalling it the standard way. However, it still left behind tons of stuff in it's C:\Program Files\Computer Associates\ folder. And one process was still in autorun, namely caissdt.exe, taking up 9 244 kB of memory according to taskmanager. Killing it however seems to not have ill effects and I could manually remove the files it left behind and the registry keys I found. I think it's amazing someone would think of making anti-spyware with malware like behavior.