Shoutbox

Hi all,
can you help me with the last build of WLM 2009 (14.0.8050.1202)?
After installation, when I try to login Live Messenger shows me the error 8000401a "Signing in to Windows Live Messenger failed because the service is temporarily unavailable. Please try again later."
I'm using Windows XP Professional, I don't have any firewall and my Antivirus is Eset NOD32; I have a wireless connection and WLM 2009 works fine on another pc connected to the same router.
I 've done everything, I renstalled it, repaired it, I cleaned registry and I tried logging in with 3 different accounts. I've also deleted "Windows Live Contacts" and "Messenger Cache" folders: I still get that error.

I've already posted in a lot of other forums, with the hope of finding someone having a solution, because on the net there are no informations about this issue.

Thanks for your help