I have a problem which may or may not be virus-related.
Lately a couple of programs I've tried to install have faltered in mid installation with an error message along the lines of "MSIEXEC.EXE HAS ENCOUNTERED A PROBLEM & NEEDS TO CLOSE".
I nuked my system a couple of days ago with AdAware & Spybot Search & Destroy but the error still appears. Never used to happen. Maybe a file was eaten during a previous eradication. Is there a simple fix for this?