I charge my N810 fully and lock the screen with the button on the top of the unit. I slide it into the grey holder that came with it and shove it in my rucksack. Sometime later, I pull it out and find that the applets have moved around, as though they have been dragged.

Does anyone else have a similar feeling that the key-lock is not staying on? I'm very careful not to knock the lock button and I'm sure it doesn't get bashed in the rucksack.