Pondus
11
In Avast there is an option to Repair file then why it does not repair infected file or files. Its strange when it has an option and cannot do that.
it depends on the file and malware type
Clean, Quarantine, or Delete?. http://antivirus.about.com/b/2007/03/11/clean-quarantine-or-delete.htm
Clean: attempts to remove the infection from the file. This is only pertinent to virus behavior, wherein a legitimate file has been 'infected' with non-legitimate (usually viral) code.
On the other hand, antivirus software can't 'clean' a worm or a trojan, because there is nothing to clean - the entire file IS the worm or trojan.