Does Zope store changes to the database in memory for an extended period, rather than storing them in the data.fs file? I've been noticing that after a system crash (unrelated to Zope) the database will revert to an earlier state *even if Zope was running for some time after the changes were made*. I must be misunderstanding the way the undo system works. I wasn't aware that the database had to be packed in order to be actually saved to disk. - Gregor http://anime.at/gregordyne Mage, Anime, Gernsback, Eidolon, Miscellany