Maybe you do this....but couldn't SAS subscribe to the updates from all the other anti-virus products and get all the problems? I ask because I've often had to use multiple installs of various ati-malware solutions to get rid of problems after my paid service fails to solve the problem.
Boot into safe mode by pressing F8 during bootup. I've had success running "Safe with networking." Trend Micro RootkitBuster Beta helps find the problems, but not the source ...so far. I'm hoping SAS will.