Noticed that when my E260 is plugged into a docking station it turns on, it proceeds through the Boot Screen to the Now Playing Screen (as I have set it to do). Instead of playing as it normally does, a white screen appears with a faint image of a USB symbol and then the player reboots. This happens ad infinitum (well at least 4 times as I unplugged the player).
I've reverted to Release 3.1.