Vista - Messenger Disconnecting in Windows Vista

Hello,

I have the following problem on a New Vista Pc.

After a while the MSN Connection is dropped. Without any reasons. The PC is
connected to a Internet router.When the connection is dropped i have checked
if explorer is still working and the internet is there so the connection to
the router seems to be ok.

On the same router there are other PC's connected (Win XP) there the
messenger is working without losing the connection.

So the problem is only on the Vista Pc. the MSN verison is live 2008. the
Vista is home premium SP1.

Does anyone has a solution.

Thanks


Best regards


Dca