sqlite doesn't remove traces of data in the db file after it has been deleted from the database, which is a privacy concern of some callers, notably Firefox. In order to do so, set SQLITE_SECURE_DELETE=1 which will zero-fill data when it is deleted. Doing so may even improve performance of some operations. See also https://developer.mozilla.org/En/Storage:Performance#Vacuuming_and_zero-fill Would like to see if we can get this in F11 if possible.
This bug appears to have been reported against 'rawhide' during the Fedora 11 development cycle. Changing version to '11'. More information and reason for this action is here: http://fedoraproject.org/wiki/BugZappers/HouseKeeping
I've been hesitant (to put it mildly :) forcing this behavior on all sqlite users, and now I'm glad I was. Sqlite 3.6.23 added a pragma to control the secure deletion behavior per db, which is how this kind of switch needs to be: http://www.sqlite.org/pragma.html#pragma_secure_delete WONTFIX, users with sensitive data can use the new pragma instead. sqlite-3.6.23 was just built for rawhide and I'm willing to consider putting it out as an update for other releases once rawhide proves it doesn't blow up anything.