Calling all techies

yes... all techies... if u noe all the stuff bout computers of course..

now i have a problem. I have recently upgraded my Windows Messenger to a 2009 version. which was yesterday. and now today i can't seem to log in.

i did this repeatedly. i even did the troubleshooting part. still no signing in. so pls help...

for ur info.... i've already check my firewall and its is confirmed tat my messenger is allowed pass the firewall.... and yes i double checked

so any advices?