I receive a message after every other round that says my storage device has been removed. Tech support instructed me to remove my profile and try to re-install it. This did not resolve the issue. I removed ad cleaneed the hard drive with no improvement. I noticed it is only with Black Ops 2, and it is only on multiplayer online games. Multiplayer split screen does nto seem to have the issue. Also, for me, it only happens when I play the ame mode that I play the most, Capture The Flag Hard Core. I played several Team death matches in a row with no issue, besides poor connectivity.