I think I found a undefined virus or spyware that seemed to try to install on my system (without prompts from UAC) It's name is DifXInstall32.exe I did not find much on it with the exception of this link:
It seems to be unclassified... not sure. I found it trying to install after I downloaded mail with Outlook 2007 along with a few other exe's that I did not catch.
Does anybody have any idea what this is? - And if so, how to remove it since it slipped right past Norton 360, and a cocktail of anti-spyware apps installed on this Vista machine.