I have installed Windows 2008 R2 SP1 in a VirtualBox VM. It works fine, except that if I Remote Desktop (RDP) to the VM from the host (machine running VirtualBox, Windows 7 SP1), after a minute or so the windows shell becomes unresponsive.
I can no longer start task manager, open the start menu or switch applications. Keyboard input also drops some keys. Mouse movement is not affected.
Any idea what is causing this?
NB: This is Windows RDP, not the remote display built into VirtualBox