>Every so often I get this error in the bottom pane, right after reading a message and when going to the next one.
>
>-------------
>Forbidden
>You were denied access because:
>Access denied by access control list.
>-------------
>
>Seems to happen once or twice a day.

I really don't know what could cause such a message. I never saw it. Do you still have that situation? Is that the exact text of the message?