I have a latest Dell Latitude E4310 associated to a Dell dock with Ubuntu 10.10. The Dell dock is associated or connected to two monitors, one DVI and another VGA. While I unplug the laptop from the dock and I release the screen it is empty and it is not possible to begin it even through scripts, later than that if I plug the laptop in the dock another time it seem that the laptop do not connect with the monitors, mouse or keyboard and the just thing I can perform is turn off the laptop by touching the button for some seconds. Do anyone know what is happens? Please provide a few ideas about this issue.