Virus scanners ar definitely a good thing to be running, as are
firewalls. I also use these two programs to detect and remove adware
and malware:
Ad-Aware http://www.lavasoftusa.com/
Spybot http://security.kolla.de/
I run both a few times per week to keep my system problem-free. Both
programs are freeware.
Craig
[Posted in FML issue 4197]