MSN is showing me as offline

As I've had previous issues with my computer, I've always got help from sevenforums. ;D

Now, I have a really bad issue.
My WLM 2011 is showing me as offline for everyone, and it's getting really annoying.
I've tried different computers, same thing there.
I am signing in as Online/Busy, and not Invisible/Offline or anything like that.

If anyone have any solution, please share.. would love to get this fixed

If it was just one computer I would say the WLM got corrupted and need's to be repaired.
But so I suspect that WLM is somehow blocked in the firewall (perhaps even in your router's firewall) ??
Mayby Dad or the big bro played a prank on you