This is the third time I have started up reach and got a welcome to reach and 5000cR.
It deletes all of my campaign progress again. This only happened when I first got the game and about 2 months ago when my xbox red ringed. Has this happened to anybody else?
By the sounds of it, your Xbox LIVE Profile corrupted.
Simply delete it from your Hard Drive and download it again from Xbox LIVE.
This situation has occurred to me on several instances. My campaign progress and game preferences have been unexpectedly deleted, although all online features remain unchanged. As this has only occurred with Reach, I am somewhat skeptical that it is a general Xbox issue. However, as this is relatively infrequent, I do not deem it to merit much concern. From my experience, I have been unable to determine a specific cause for this reset. My only advice would be to memorise your preferences, so that they can be easily defined if a reset arises.
It has happend to me once.
Same happened to me. It is a glitch that has been around since Reach lunched. Dont know what triggers it, it happened to me after i change my timezone.