circular logging not working

I have an Exchange 2003 SP2 server with a couple storage groups for all my user mailboxes.  I also have one storage group containing one mailbox used for journaling.  On an xp vm, I have outlook running and it has rules to move incoming mail to a pst and I archive (create new pst) on a monthly basis.

Since the journaled mail doesn't stay on the server, I decided to enable circular logging on this storage group.  After I did that, I did a full backup to clear the logs that were already there.  Now it's 2 days later and the designated log folder for that storage group has over 740mb of transaction logs since I did that backup.  Am I missing something simple here?  I would have expected the transaction logs to recycle itself for this storage group but doesn't appear that way.
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Seth SimmonsSr. Systems AdministratorAsked:
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Glen KnightConnect With a Mentor Commented:
Did the logs flush after a backup?

Did you dismount the store to enable the circular logging change? Did you enable circular logging through the GUI?
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AkhaterCommented:
Yes restart the information store

http://support.microsoft.com/kb/314605
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Seth SimmonsSr. Systems AdministratorAuthor Commented:
obvious rtfm issue...

been working with exchange for some 11 years but never had to use circular logging; all the articles i found were mainly about the negative impact in terms of recovery which i'm not concerned with on this storage group.

actually, even though that article says to restart IS, it is working just by dismounting and mounting the individual store; which is good since i didn't have to take the other groups offline (though it would have been brief and users may not have noticed).

did a backup to clear the logs and the last couple hours haven't generated any more.
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