weird ad pop ups

Looks like you have been infected by this ;

http://www.securelist.com/en/blog/706/Worm_2_0_or_LilyJade_in_action

The above should get rid of it, however, you should check for browser plugins and uninstall anything that looks a bit suspicious.

Interestingly enough, the author of it claims it is "not for malicious... blah" and claims he is doing people a favor by removing other malware that is installed. I had to laugh at that...