How often have you come across a non-responsive windows explorer? Try shutting it down with the task manager? That can be fine for a lot of cases and solve the problem, but in some cases the desktop is cleared and unresponsive. Before today I would usually reboot. Of course, since you have no taskbar it is worth using Alt-Tab to flick between programs and save any documents first. But why reboot I thought to myself? If a system service crashes in Linux there’s seldom a need to reboot, simply restart that service again. On a Windows XP machine, killing the explorer processs then if it does not come back up itself, use New Task and run ‘explorer’. Should bring your desktop back to life and fully working!