XBox 360 Game freezes at loading screen.

Okay someone gave me this advice:

"Sounds like you have what i did recently. Goes to the menu and after everything is loaded up, freezes. I found that disconnecting your internet as the menu is loading up, then reconnecting it after its loaded up and then connecting to the servers manually from the menu was work around that did the trick"  

And it works but tiny SNAFU:

That worked! I don't understand WHY it worked but it did, lol. I'm not going to have to do that every single time I load the game now am I? Eek. I hope not.

'You are, its a pain, buts its better than nothing.  I don't know why it worked either, I stumbled across it while trying to fix mine.  I had to do that for a while then one day it randomly stopped making do it.  its really strange,

Oh and another thing, if you try to join a friend's game while you have this issue it will freeze going back to the main menu.  So you can only do quick matches and host games.  This is a temporary fix, but at least it gets you playing.  I'd PM one of the devs. I couldn't find a fix for this on the help boards either.'"

Yeah... so not really a fix at all really if I gotta do every time and have to host every game. I even have a hard time quick searching matches this way as well as 4 out of 5 attemps left me stuck on "waiting for other players".

Another freind swore up and down if I deleted everything ME3 related and cleared the cache, then rebooted my xbox that would fix the problem. I tried that and the game would load just fine so I thought I was in the clear and redownloaded the mp dlc and it started freezing AGAIN.

I tried that solution again but this time when redownloading each dlc pack, I would load the game to see if was working and it loaded fine for every dlc pack except the last one - Retaliation. THAT'S when it would start freezing again on the menu screen. This leads me to to believe it's N7 HQ problem since retaliation is the dlc that introduced that stuff with the challenges and the banners. Something somewhere on that end glitched out and corrupted something when I changed my banner to the FemShep banner on my laptop. This is something that I can't seem to fix on my end. This is something that needs to be done on YOUR END.