hotmail - windows live mail beta

Hi,

Last time when i checked my hotmail, i got a green button
for an update for windows live messenger.

Looked cool, so i pressed the button and got the update.
Result: after i login, the explorer hangs and the only thing
i can do is to shut down explorer.
It happend to me with three completely different computers,
so i really believe it is a problem on their side. Also on
forums i see people with the same problem.
There should be an option to turn back to hotmail, but it doesn't work
because explorer hangs after login.
Think twice, when you get the offer to update like me.

If there is anybody with a solution, i also like to hear ;-))

Thanks in advance,

heian