I would do two things:
1- check to see if your kindle is still indexing...if it is, delete the un-indexed books. (from the home screen do a search on a nonsense word and set the search for 'ALL Text')
2- I know it sounds silly, but definitely try reconverting in Calibre mobi-mobi and then send the new mobi files and see if they work.
If these things don't fix the issue, you might try a factory reset.
Last edited by GoSharks; 01-01-2015 at 10:17 AM.
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