Error in a mailbox?

We have a weird error that is just affecting one mailbox.

The error might have occured as a resulty of a crash...

The error is as follows...

When receiving mail all mails are marked "unread, deleted" on arrival.

They should be marked unread but not deleted. As far as I can tell the mailserver is responsible for this to happen.

Does anyone have any suggestion on how to correct this?

We are running IMS 5.2.

I have tried reconstruct -m (no errors)

and reconstruct -n user/userid/INBOX to check this particular account. No errors reported.

There has been configuration changes made during the period when the error appeared for the first time. Just the crash.

[720 byte] By [BNs] at [2007-11-26 9:02:56]