Yes I have problems too, I backed it up, charged it, connected to Nokia Charger with Nokia supplied memory in. Half way through it said error, remove battery and power, reapply and push power switch. Then it said it was disconnected but it was not and it has been dead ever since. I have tried other usb slots, battery only, battery and another charger.
One thing though. With battery only at least it vibrates when you push the power switch. Add the charger and it does not. Also on battery only, a few devices momentarily show up as being connected, just to vanish again.
I have a feeling it is dead now as it just sits saying nokia.
Message Edited by 1tonnefc on 16-Apr-2008 11:24 AM