Question : Offline Exchange defrag mismatch in database sizes

I have recently run an offline defrag of our Exchange 2003 public folders. When exploring in win explorer the edb and stm files add to 28GB, but when I add the public mailboxes in exchange system manager they add up to 18GB, so wondering where the extra 10GB is, or more important how to recover that 10GB of free space.

Answer : Offline Exchange defrag mismatch in database sizes

System manager only shows the content of one file to get the true size see here: http://technet.microsoft.com/en-us/library/aa996139(EXCHG.65).aspx