I've had my ipad (1) for almost a year and never had any problems until the last OS upgrade. The upgrade failed (code 6) and I had to do a restore, disable my security s/w (win 7) and repeat the upgrade several times before it appears to have worked. However there are some problems, particularly with syncing music and photos. For instance sometimes the music syncs ok but plays with no sound, and if more music is transferred the whole lot disappears! Has anyone had similar problems with this upgrade?