For the message that won't delete, download and install this hotfix, with
Windows
Mail not running:
http://support.microsoft.com/default.aspx/kb/941090
Although it's labelled as for mail stuck in the Outbox, it also works in
other
folders. If you don't know whether you have the 32-bit version of Vista
or the 64-bit version, try the hotfix for the 32-bit version first. Certain
common antivirus programs, such as most of those from Norton or
McAfee, tend to cause stuck messages and other problems in Windows
Mail, although seldom immediately, so if you have such a program,
remember where to find the hotfix and hope it will install again if you
need it again. A recent version of the Trend antivirus program also
causes assorted problems in Windows Mail.
If this does not also cure your other problem, we need more
information on how you are trying to automatically move messages,
and what if any antivirus programs you have. If you get any error
messages, click on them and copy the entire error messages into
your next message.