Excessive CPU use and Anti Spyware software

Installed the latest version on 2 XP Pro systems and Comodo was using between 30% and
35% of CPU time, sometimes higher.

I had a couple of Anti Spyware pgms installed, removed them and all is well now even with all Comodo logging running.

I suspect that the problem was tied to SpySweeper interacting with Comodo.

Tried Outpost, same problem, same fix.

Something to check.