Recently and out of the sudden this problem happened, I can not login to Windows Live Messenger on the laptop (win2003).
I uninstalled Windows Live Messenger and reinstall it again same problem.
I uninstalled Windows Live Messenger, and install V7.5 same problem.
Please see below pic to get the idea what does it happen when I login
http://img292.imageshack.us/img292/3315/msnmssengerandloginproblj0.jpg