SC5 gets stuck at "checking downloadable content"...

This happened to me as well, along with general XBL issues and my account taking forever to log on. The solution is very simple, and doesn't involve deleting any DLC. Simply go to you console's settings, then go on storage and delete the hard drive's cache. After that just turn your console off and try again.

Apparently this has happened to a lot of people recently, so it might have something to do with MS updating their servers and doing tests in preparation for the Xbone.
 
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