I got my machine infected with malware and Lavasoft Ad-aware 6 updated with the latest reference list file wasn't able to clear it up. So I went looking for an alternative and found
SpyBot. Downloaded it, ran it and it found two dozen nasties lurking around my PC. Excellent bit of software and worth getting. Worthy of a donation. Watch out all the SpyBot URL's that are hijacked by SpyHunter and SpyKiller. Nasty competition.