I have the same problem.. Moves a bit, then the screen locks up. Everything else seems ok, but have to power-down or reboot to start the process all over again. Weird...
i did a full reset of the device and re configured and now it's working perfectly
but normis please have a look at ticket 2013061766000953 regarding packet marking
as i told above after reset it's working fine
but i think the upload tx rate of WAN interface is showing wrong rate both on graph and in interface status
please refer to ticket 2013061866000997