Hi Guys-
I'm not as skilled as some of you in diagnosing and figuring out problems with viruses, but I also have Tune-Up Utilities 2004, and ran into the same problem with my Avast home edition picking up two viruses-one in the 1-Click Maintenance program (the scanner for temporary files) and one in the Tune-Up shredder program today after Avast did its automatic update (also today).
What I did was I reinstalled Tune-Up from my Control Panel (since I also deleted the virus from the 1-Click Maintenance & Shredder and they wouldn't operate properly afterwards)...and kept rebooting my computer every time that alarming popup came up after I clicked on either 1-Click or the Tune-Up shredder. I didn't try to delete or repair the files (as noted in earlier posts, repair is not possible), so I would just close the warning window and reboot. After 3 to 4 reboots, the Avast! program stopped sending up the popup alarm, and everything on Tune-Up (so far) seems to be working properly (as well as my other programs). I think what may has happened was the resident scanner either figured out that it was sending false alarms or maybe it did take out some viruses doing the reboot process, I don't know. Hope this solution helps some of you until we get a a better explanation of what happened.
BTW-just a note...since I have installed the new MS Windows service pack 2 a couple of weeks ago, I've had to either reinstall or change settings on my spyware (Adaware), antivirus and Tune-Up Utilities...I hope there won't be too much more 'adjustment' down the road, hmm!