While performing a scan with Ad-Aware, a background antivirus monitor may issue an alert, stating that a virus has been found in the temporary directory (%temp%) for the current user. This does not necessarily mean your computer has been infected with an active virus.
Most antivirus resident scanners will not scan compressed files and only monitor your memory for the sign of an active viral process. During a scan, Ad-Aware will temporarily decompress files to scan their contents without activating the content, but in doing so, the file is noticed by the antivirus' resident scanner. Also, some antivirus applications include an option to quarantine infected files, and when Ad-Aware decompresses these quarantined files, the antivirus background scanner detects the virus moving outside the quarantine area. To avoid this you can either remove the quarantined files via your antivirus application, or have Ad-Aware ignore the antivirus program's quarantine folders/files during a scan.
