Tried searching and didn't find anyone mentioning it here - maybe I'm the only one but....
If you are getting an 'enhanced' search on your left screen (properties show its from p*punder.inf* Replace * with 'o' )and it annoys you (it was fuckin pissing me off) I found a little program that shows you all these little browser enhancers that automatically installed themselves. One click on the ones you don't want and bam, problem solved (at least I hope)
Adaware doesn't find it and the virus scanners don't either.
Anyhow, here's a link - it's simple and free
http://www.definitivesolutions.com/bhodemon.htm