Hi,
this is my problem: with VBoxVRDP and rdesktop I have 2 mouse pointers and both are movable. When I start the local vm with VirtualBox then the windows xp mouse is not movable. The mouse from the host system (ubuntu 7.10) is movable. When I click in the Window I get a dialog to catch the mouse pointer. After that I have the same problem.
Before I have tested with VBoxVRDP and before I have updated to new version of VirtualBox the local vm runs very well.
Regards
Björn
Update: On another ubuntu computer (7.10) I have the same problem after an update to version 1.5.6-28266_Ubuntu_gutsy.

