I have been playing oblivion on the 360(Note) I will be switching to the computer soon() Anyway When i go to load my profile i notice pops up saying somthing like this i think (The file you a currently trying to load does not have downloaded date do you wish to continue i select yes and ALL of my grear is GONE its just my character in his gintch in a lake and nothing in the invintory HOUSE or anywhere i stashed my stuff also my DLC is all gone it could be my hard drive but ive deleted my DLC and redownload it and it dosnt work i made a new acount saved came back later and his to gear was all gone and it still shows that warning() has any 360 users had this happen? and can anyone help me?

Was someone using the xbox before you at that time? If a profile gets loaded, and that profile plays for a while, and then you switch to your profile, with the game start menu still playing in the background.... you must restart the game.

Do you move your profile around a lot? On one of those memory sticks I mean. Did you get the DLC on a friend's xbox, then move your profile back home? This means that the DLC you purchased is only licensed for your friend's xbox: The DLC looks at the box origin, not the profile.

Is your dashboard updated?

Off the top of my head....

Did you/someone perform maintanence on your Xbox 360 hard drive? (This means it deletes DLC saves etc and brings them back, Reduces Lag, Freezing and Overheating). If so then start a new profile, Mess around on it for about an hour or so, Then go back to your old one. Not %100 on this one but it's happened to me on F3 and Oblivion after maintanence.

(No my xbox is all legit i havnt done anything to it but play my games on it download dlc on it never have i moved my acount or done anything else that youve said)