Are you positive this is an issue with the game? RMC, Lube and myself played on Sunday and Lube had trouble connecting to play. He's played Halo 3 online a few times so his connection worked for something. After he got things worked out with various tech support calls to different companies, he was there to stay. Then I lost my communication but was still in the game. I left the game and tried rejoining, but couldn't. THEN after restarting everything I got back in and about 30 minutes later got dropped again. THEN RMC got kicked.
I would LOVE to know if this is something other than my fault or my connection. There seems to be quite a few connection problems so maybe it IS specific to the game. I'm going to keep looking into it, but if you find other info, bring it back here. THANKS!