hiimen

Hi,
i am troubleshooting why many of our network users have random
disconnections of Windows Live Messenger. All the users are on public ip
addresses and we do not have a firewall but access control list which do not
block msn/windows live messenger. Also there is nothing in our internet
engine's log that suggest blocking on the users' internet at the time of
disconnections. The other msn chat clients including Digsby and Adium seem to
get the disconnections too.

As a test, we had one of our users to downgrade from Windows Live Messenger
to MSN Messenger 5.1 and he has not had any disconnection. This disconnection
issue started sometime in mid-july 2008. Is this a known issue/bug in the
messenger client/server or windows update?

Thanks for any suggestions and all help.

Cheers,
Paul