xbox live mw2 connection problem

i've been trying to play mw2 and it is not working not sure if its affeccting anyone else

it doesn't allow me to enter a lobby it just keeps on searching til 50% then gives up with no games found

I have been having the exactl same problems. Even after opening the ports on my router. Check this site a LOT of people have ben having this problem since the update.

http://blogs.msdn.com/xblops/archive/2010/03/31/having-issues-finding-matches-in-modern-warfare-2.aspx

allright thanks