Unlike the Windows VM, the shift and control key state is not reflected in 
the events generated by mouse movement.

The enclosed patch to HandleEvents() in sqXWindow.c fixes this (3.0pre2):

@@ -930,6 +989,7 @@
     case MotionNotify:
       mousePosition.x= ((XMotionEvent *)&theEvent)->x;
       mousePosition.y= ((XMotionEvent *)&theEvent)->y;
+      recordModifierButtons((XButtonEvent *)&theEvent);
       if (inputEventSemaIndex != 0)
 	{
 	  recordMouseEvent((XButtonEvent *)&theEvent, true);

-- 
Ned Konz
currently: Stanwood, WA
email:     ned at bike-nomad.com
homepage:  http://bike-nomad.com