The servers are not working again for Halo 4:http://www.examiner.com/article/update- ... s-detailed
Many complaints on the forums@halo waypoint as well.
This is not the second time since release, I've never known a Halo game to have these many issues.
The numbers have dropped right off on multiplayer since Black Ops 2 was released.
I love Halo but this is pushing my patience to the limit.