While running an OS in VirtualBox on Ubuntu 10.10 amd64, I find the the left control key is not being properly detected. (The right control key is used by VirtualBox, but the left control key should be available.) This makes programs like Emacs, that heavily rely on the control key, not work correctly. Searching the Internet, I found similar complaints that were fixed in by turning off "Show position of pointer when the Control key is pressed" in mouse preferences. Since this is already turned off on my system (actually in both host and client OSs), I don't think this is the problem.
My question: is this a bug, a feature or operator error?