Outlook moves items without rules..

[Serge]

Hi,

I've a very strange problem : we upgrade from NT and
outlook 2000 to XP and outlook 2002. A user complains
that a new personnal folder ( pst ) appears, and close is
disabled.More strange : The messages arrives in the
normal mailbox, after read it, the messages moves
automatically to the pst file inbox folder. If i move the
messages from the pst file inbox folder to the normal
inbox folder, the messages comes back automatically to
the pst inbox folder. I've checked the rules, there's
only one defined to move items from an exception list.
But the exception list was empty. I delete the rule but
it don't fix the problem..

Please help me !

PS this is an exchange server..