Is this problem ever going to get fixed!! It takes so long to move a mailbox because I am getting these stupid "failed to cleanup source mailbox" warnings. I get the typical attempt 1/6 all the way to 6/6 in the log before it finally finishes. It adds at least 3 minutes to each move. Its a hack in Exchange that was supposed to get fixed many RU's ago and its still happening. Its documented in the RU1 update for SP3 and after applying this, I am still getting this warning? Does anyone know if there is a fix in the works or a work around for this. I need to move 3000 mailboxes and we are talking many hours of extra time because of this problem!!
Below is a section of the log. Mailboxes move fine, no errors on the move. It just takes so long. It doesn't happen with every mailbox. I would say at least 25% or so.
at Microsoft.Exchange.MailboxReplicationService.CommonUtils.CatchKnownExceptions(GenericCallDelegate del, FailureDelegate failureDelegate)
10/9/2013 7:49:01 PM [EXSERVER1] Post-move cleanup failed. The operation will try again in 30 seconds (5/6).
10/9/2013 7:49:32 PM [EXSERVER1] Failed to clean up the source mailbox 'Primary (76fc3700-ec1b-4569-91b0-add520f1fea7)' after the move. Attempt 6/6.