This may sound strange but my Iphone 4 running V 6.0 (10A403) is playing audiobooks at a faster speed than it should. I've noticed it on the last couple of books and it may coincide with my updating the software to 6.0 (can't remember what it was originally). I've compared it back to back with the same books as played on the PC and while they are still listenable, they are definitely being played too fast. Am I crazy? I can't find any speed adjustments on the phone... Has anyone else experienced this? Should I delete the books and try synching them again?