[SM-USERS] 'You must be logged in...' after Message Compose

[David <dav...@th...>]

Hello,

I've got a really annoying problem here. My SM posts an error message
after hitting the SEND button in the compose window.
It tells me "You must be logged in to access this page". I am, however,
correctly logged in. Everything else works fine.
This message appears everytime I want to send mail. It doesn't matter if
the message is short or long, neither if I was writing it in 10 seconds or
over 30 minutes.
After clicking on "INBOX", everything works fine again. The messages are
sent when using Firefox. Using IE the messages are not sent.

This started suddenly, about two weeks ago. I can't quite figure why.
Some time before it first happened, I installed two new plugins.
Archive_Mail and email_footer. I'm not sure if this caused the error. The
plugins worked fine. Disabling those two plugins did no good. Same error
as before.
There were no further changes to the installation.

I'm running SM 1.4.4
Plugins: adress_add, compatibility, message_details
(more Plugins installed, but not enabled)
Apache 2, PHP 4
Dovecot IMAP server.
SuSE Linux 8.0
Browser: Firefox 1.0 + 1.0.7, IE 5.5 on WindowsNT + Win 2000

I hope someone has a good hint for me, as I'd really like to use SM in the
future. But not with such annoying errors.

greetz,

David