I think each record in vhsu.pdb has the Deleted attribute set. Now, while I don't think PalmOS should be deleting databases that have the Deleted attribute set on each record, maybe this is a part of the cause. Try changing the record attributes and see if it still happens.
Alex -- For information on using the PalmSource Developer Forums, or to unsubscribe, please see http://www.palmos.com/dev/support/forums/
