My System: Dell8200, Win XP Home, Symantec AVC, ZoneAlarm, SpyBot S&D, AdAware, SpyWare Blaster. Symptoms: Noticed significant delay attempting to run SpyBot and AdAware--Task Manager indicated these were using 99% CPU. Let Spybot run to completion (1.5 hr)---detected "pipas.A" trojan. Removed, but continues to regenerate after reboot. Attempted free on-line scan using Panda and SpywareSweeper---these detected problems, but they could not be removed without purchasing removal tool. Downloaded and ran Ewido malware scanner---detected problems fixed. SpyBot still being significantly delayed