I don't use an Antivirus, because I have never been infected...

... said the user while his computer was crippled with malware. His answer didn't make sense anyway, because how could he know that he was (never been) infected if no scanner would alert him?
He asked for my help because his Internet Explorer browser crashed frequently and his computer was crawling. Although he did get popups as well, he didn't really see this as a problem because he had a good popup blocker. O_o
No way malware was causing this (according to him). It was always been like that..... (so you can imagine how long he was infected already...)
And yes, I've found malware from years ago: DollarRevenue crap, EliteMedia, leftovers from the Alcan worm, and a recent Zlob Media variant.

Time to make him aware that his computer really is infected - so the only way to show the facts is to install an Antivirus... which he did.
He was shocked once the scanner started to detect and delete the files. Funny part here was, a HUGE amount of infected files were present in his Limewire shared/complete folder (because of the Alcan Worm, which was luckily already disabled). So it was an extra shock for him since more than 1000 files were already detected and deleted there.
After all, we could clean everything and I'm sure he would never uninstall his Antivirus again. :-)
A shocktherapy is really needed once in a while.