Member sending himself PM's

One of my members seems to have a fault with his PM system, when he sends a PM to anyone they just come back to him undelivered !! It appears to be just him and I wondered if it had anything to do with changing his username which was done recently.

I've checked that he is 'allowed' to send PM's

Also the same member is unable to add an image to a post.

Can anyone shed any light on this one?

Where is the PM going in outbox? If its in outbox then that user hasn't read that PM yet and once that user does it will be placed in the Sentbox.

Is he posting

Code:

[img]image url here[/img]

Yes I understand that, but the PM is arriving in his inbox immediately after sending it.

can you ask him to provide screen shots ? does he sends PM to himself ?

With the members permission I have just been on his PM system and the fault appears to be, whoever he replies to, or starts a new PM, the 'username' box is already filled in with his username !!!