Downloads gone... Seriously need help.

I haven't posted much on these boards at all, but I couldn't find a single thing on the Xbox website about this, and I don't want to contact them again, for I just got my system back yesterday from being repaired. If nessisary I might though.

I recently got my 360 back, and it came with a free month of live. Now that's pretty awesome, i've been thinking about doing that for a while now. I hook it up to the internet, put in the code and I'm a gold member. Halfway while I was playing my internet acted funny and I got disconnected. I'm a patient person, and I can usually wait a while. When I check the system to see if a connection is avalible (You know, the page that you need to log off your account and it goes through the small list), and after that, I log back onto my account, but I notice that my Overlord icon and background and completely gone.

I go back to themes and find that it isn't even on my harddrive anymore. No biggie, I can just download it again - I didn't need it that much anyways...

However, today when I tried to play Oblivion, I tried to load my file and suddenly it says that it doesn't have all the data that is in that file and it would load what it could. I get worried after this and check all the other things I've downloaded... All my arcade games I bought are now demos again... The only things remaining are the videos I bought.

Now, I didn't mind losing the Overlord theme, but losing over 5000 points of downloaded content definately got my panicking. I have NO clue what I did, and I know for a FACT that I didn't go into memory section like a dumbass and deleted all the things I have downloaded. The only thing I even recall deleteing was one of my demos to free up some space on my harddrive.

Please help me, I DO NOT want to buy back over 5k points of things that shouldn't have even disappeared in the first place, I have proof that I downloaded them on live. Is there anyway to get this back? Do I have to contact Microsoft?

Please, help me. Also, sorry for the long boring post.

wow dude that's like my worst nightmare. Ummm, lemme see if this link helps. it kinda won't since it was kind of a warning but w/e...

http://www.xbox360fanboy.com/2007/12/04/fall-updates-live-id-management-causes-issues/

once again, im not sure if this is your problem, but it's the closest thing i could find.

Thank you both for the help.

Saved me a lot of worrying and the feeling of wanting to punt my 360 out into orbit. Going to check it now.