Yes, ad yield manager is still in my computer as from what i can find. Possibly other toolbar spyware/adverts.
I blocked the site url wXw.ad.yieldmanager.com (www. although you shouldnt visit the site if youre just passing by, or viewing the post for youre own issues as you may receive the virus also) with avast. Whenever i go onto yahoo answers I can see avast has blocked an ad in the corner directly from ad yield manager. So its still trying to create popups, meaning its still in affect somewhere.