Originally Posted by Unassisted
While it's a bad idea to run more than one antivirus utility, it's OK and even a good idea to run more than one spyware utility. I run Ad-Aware every few weeks after the Norton suite does its thing.
In previous versions of AdAware, it would detect Spybot as malware. that may have been corrected. It is NOT a good idea to have more than one inline scanner running at one time. that can cause some problems.