Save issue

That'll be the problem then. When you recovered your GT XBL downloaded the last record it had of your account from when you last connected to XBL which also didn't have the achievements you got while out at sea. As such the service wasn't aware of you getting
those achievements and scrubbed them. Your only option is to do them again which is either a blessing or curse depending on how you view ME2.

You're not the only one. I have been having freezing issues since adding a 2nd character profile. I deleted the game then re-installed (since I bought the digital version). To this moment I am still installing (since 10am this morning) (It's 4:20pm now).
So I haven't been able to test this theory.

It's just the nature of the game. Eventually your file won't save. I recommend loading your file, and then saving another copy of it, either on a different media (such as, load from HDD and save onto USB), to have the game re-create it. This was an issue
in the PC version as well, especially when the worlds would get massive. I'm not sure if you can do that though as I haven't tried it.

@Knowitall: I'll try that because I would hate to have to ship my xbox all the way to the states just o get the thing looked at; it that were the case it's easier to just buy a new one. I just figure there's nothing wrong except it's having issues with the
save option.

@VernierSlake: Let's say that might be the case, before I got an XBL account I played my other game on my xbox and they all updated with my account when I logged online; so that would still make it suspicious that it wouldn't transfer over to my XBL account.

ME2 is one of the few games that I don't mind playing many times over, but since I know I'm getting ME3, I don't want to get shortchanged when I buy the game and I can't even use the save data that I currently have on my xbox. That's a -lot- of hours that
would go to waste if this issue isn't cleared up by then.

I will check this forum again later but it is late for me and I have work in four hours, but I'll try it and get back to you.

"Recovery" was designed for the purpose of replacing things such as a corrupted profile. If you need to move your profile around it's best to keep it on a storage device like a USB flash drive. You'd be amazed what can happen to your profile in between
the time it's been recovered to another machine and it getting back to your machine. There are many horror stories about it in the Accounts Suspensions and Console Bans forums.

Anyway, did you try deleting and recovering it? This is much easier and less invasive than resetting or sending your console in, especially if there isn't anything wrong with it.