Message with attachments shows up totally empty.

[Mark London]

Can anyone tell me if this is a known problem?  I couldn't find anything about
it.  Using the latest version of cyrus, one of our users received a message
with several attachments.  Using different mail clients, they all show only the
header of the message, no body or attachments, even though they are there
(the person was able to forward the message to others, including themselves).
Squirrelmail displays it without a problem.  Is this a known problem, and if
not, is there anything I can do to help debug the source of the problem (i.e.
turning on a debug switch?)  Thanks. -   Mark