Quite possible. CF cards include a built-in controller and I wouldn't be at all surprised to learn that these are sensitive to falls or severe bumps. -----Original Message----- From: bookport-bounce@xxxxxxxxxxxxx [mailto:bookport-bounce@xxxxxxxxxxxxx] On Behalf Of Kurt Edwin Yount Sent: Monday, April 07, 2008 10:00 PM To: bookport@xxxxxxxxxxxxx Subject: [bookport] interesting problem I had an interesting problem. I knocked my BP off on the floor and picked it up later, only to find that it didn't work. I tried it on both computers. At the same time I had a card that said MP3 position error. I had to erase a couple of files. Turns out that when I changed the card it worked fine. When I put the original card back in I got an initialization error. Thought I would let everybody know in case they had the same problem. Kurt