I just ran a scan using avast antivirus after deleting my restore points to rid my computer of malware that was in the restore points. The malware is gone but in the list of files that could not be scanned was something refered to as a decompression bomb. The file is in my documents and settings folder and says something about Opera and user profile in the file name. What is this and what should I do? Let me know if there is any helpful info I can provide.