Im currently playing anniversary but just a minute ago on the level keys it froze and I couldnt do anything so I had to restart the Xbox and start the level again, I was just wondering if this has happend to anynone else?
Happened once to me on 343 Guilty Spark. Restarted my console and haven’t had a problem since.
Happened to me once when I was playing The Library.
The most likely reason for it freezing is because of your connection to X-box live, believe it or not. Sometimes your console receives information that it isn’t ready to process and freezes up while trying to do more than one thing at once. Your gaming console is a machine that is very cutting edge, but still has a few hiccups now and then. If the game freezes, and you press the center button but nothing happens, then it’s not the game itself, it’s your console. Try getting it cleaned, or do it yourself with a can of air or air compressor. Also, look for a lens cleaner, that might help as well. 
It happens. Though Halos tend to have a very good track record, games still freeze. I wouldn’t worry unless it starts happening on a regular basis.
ok thanks.