I'm looking for advice on using FREE applications (legally) from sysadmins running a corporate Windows network, specifically to keep the users' workstations clean. I currently use SpyBot without TeaTimer and manually run updates and scans when I run Windows updates. This isn't too hard, since I am talking about only 30 workstations.
I have learned a lot about fighting malware in the past few months cleaning computers on sidejobs, mainly from the Malware forum here on GeeksToGo. I'm considering using SpywareBlaster on all of the workstations, and I'd like to know if any sysadmins have had issues with this in a Windows with Active Directory environment.
I'd also appreciate input on any other FREE prevention and/or cleaning apps in the corporate environment.