I finally sent my ipod out to be repaired, as nothing seemed to help, and (aside from that lame "5 r's), no one offered any suggestions. It turned out that the hold button was broken, not the actual switch, but where it meets the logic board. Pretty shoddy craftmanship, as the hold button had been used perhaps twice, and not for several months before it decided to place itself permanently in hold status. However, it wasn't worth repairing because the logic board had become corrupted at the base. All you runners who hold your ipod in your hand while running beware! Apparently perspiration/moisture enters through the part of the ipod where the USB cable connects and corrodes the board. The cost of repairing my 8Gb nano would exceed the cost of buying another one. Nice of Apple to mention that even this minimal exposure could kill your expensive media player. Or perhaps it's on purpose? My next media player was to be something by Creative, as I had dropped my old Nomad II many times, once immersed into running water. Yet, after it dried out, it just kept working and is still working, sounding great (8+ years, as opposed to 16 months for the 2nd gen nano). But I received a 4th gen nano as a birthday gift, so I'm gingerly handling the fragile creature, and hoping it won't take it upon itself to die/lock.