Aperture Vaults... Should you use it if you have the Timemachine?

I use the MAC Timemachine now I have upgraded to Leopard. Should I also Vault my images in aperture. Seems like doubling a double but I wonder how the AP library works with the timemachine. Any words of wisdom would be much appreciated. My thanks in advance.
Floor

I doubt today's TM update addresses the issue.
The key thing is that Aperture uses an embedded SQLite database to store information about the adjustments. The database has transactions and a journal. If Time Machine comes along and backs up the Aperture database while a transaction is open and not committed, or there is otherwise some info in the logs which has not been flushed to disk (this is done to make Aperture faster -- people like faster... see complaints about how older versions were slow ) and then you later try to restore the database... the database could be in an "unknown state" and could not be restored cleanly. Backups that cannot be reliably restored are... well... worthless.
iPhoto doesn't have the same issue because it operates totally different. iPhoto doesn't use a SQLite database to store info on changes to RAW files... iPhoto generates JPEG files and physically saves the JPEGs every time you make a change. If TM comes along and backs it up during a save... then during a restore you just get a JPEG with one fewer adjustment... no big deal, compared to a corrupt library.
This "difficult to back up the database" issue affects all products that work similarly... Adobe's Lightroom actually has the exact same issue (and in fact also uses the SQLite database to store adjustments).
Note, this is not "completely undocumented and unrecognized by Apple..." if you go to Apple's knowledge base (where I showed my link above) it is documented. And it has been discussed and clarified in these forums tens of times in the past 5 months. Sorry about that rock you're hiding under

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