Why does parallels automatically map or mount the hidden local Time Machine Backups.backupdb (the "I'm not connected to a Time Machine backup device so I'll backup locally until I am" feature added to Lion) as a peer to the Home folder? if "Map Mac volumes to..." is enabled. Is there any conceivable reason you would want users to be able to mess with this *hidden* mount? It isn't visible on the Host OS or under Disk Utility. IMHO this should be filtered and not displayed at all. Messing with Time Machine backups is known to cause all kinds of problems. I don't want to disable the ability to Map Mac volumes as other ones I do want to see..