Why has halo 3 xbox live been so slow in matchmaking?

[Thuan N]

everytime someone tries to find a match it takes forever and when we do find all players needed it restarts searching....
you'll get to play a game... just once every while

 

[vicc248]

its been laggin since yesterday i suggest u play custom games with ur buddies hope this helps

 

[timshalei]

I know it has been slow for me too. I think it has too many people trying to get on.