I've been infected by UltimateDefender for the past 2 weeks.
I've run all the programs you've suggested, plus a number of others.
However, this morning, after not having done anything spacific to fight this thing yesterday or last night (I did notice that McAfee updated a few things this morning), I've not seen anything related to UltimateDefender today, and have spent 2-3 hours not seeing the darn thing. I do understand that it often disappears, then reappears shortly thereafter.
The only thing out of whack is what is specified as my home page when I click on Internet Explorer. (This is where the whole virus thing seems to usually start.)
My current home page for Internet Explorer is what (I think) was set by the virus (http://softwarereferral.com/......
Now, when I double-click on Internet Explorer, the menu bar across the top of the page appears, but Internet Explorer does not go anywhere. Thus, I've been able to select programs from the Favorites menu and go about my business.
Is this a common thing?
Am I getting into trouble by resetting my Internet Explorer home page (msn) ?
I can do without ever seeing the home page (msn), if it means I won't see the virus again.