On a Windows 7 system (original install on a new laptop), Avast 6 reports "Error Message, 42110, some files could not be scanned, and identifies the following files as "a decompression bomb": C:\OEM\Preload\Autorun\APP\Acer Backup Manager\Data1.cab (plus mui.exe and mui.exe1 files). Unfortunately, the first-time backup has never been accomplished with this system, and the backup utility does not function properly (will backup up to 25% of the designated files, then stops). Is there a way to evaluate the potential for false positives with a decompression bomb (or otherwise repair the Backup Manager without consequence)?