VirusScan Enterprise 8.5i has a new feature to back up detected files to the Quarantine folder, even for detections where the action has been set to delete the file. The backup feature allows files that were incorrectly removed to be restored.
The Quarantine folder has a default setting which purges files that have been in quarantine for 28 days. The McTaskManager service (a process named VSTSKMGR.EXE) is responsible for checking the contents of the Quarantine folder and identifying any files which meet the purge criteria.
If the Quarantine folder has accumulated a large number of files over the previous 28 days, it can take considerable time for VsTskMgr to review each file. This may be observed as VSTSKMGR.exe using high CPU time on startup. McAfee recommends regularly reviewing the length of time a file is to remain in quarantine.