If anybody is still getting the war-arron crap they probably need to clear/clean their browser cache:
http://www.wikihow.com/Clear-Your-Browser%27s-Cache
http://kb.iu.edu/data/ahic.html
http://www.google.com/search?q=Clear+the+browser+cache
...so on and so forth...
[EDIT /]
P.S.
I still stand by my Spybot/FF/AdBlock+/NoScript recommendations. No need to mention Firewall/Antivirus, those are shoe-ins. I haven't gotten a virus in 5+ years since this setup.