I'm having this same problem with my 920BT, connected to a 160GB iPod Classic using the official CD-IU50V cable. It shows all my artists in the list when browsing my music collection, but tapping any of the letters on the left displays "Not Found". I have to scroll manually through the whole list. Browsing that way works just fine, though. And, interestingly, if I scroll down into the list of artists, and then stop for a second, the letters on the left will scroll down to match (so, if I scrolled down to Death Cab For Cutie, the letter tabs on the left will scroll down to the letter D). Howeve