Since I'm pretty much used to the key setup in Wolfenstein 3D and DOOM, I rarely use the mouse. So I use Alt for strafing and ctrl for attacking. Now it comes. Ctrl-Alt-Arrowkey (no matter which direction) leads into a crashout saying "ctrl-alt-delete pressed". Ctrl-Alt I agree with (strafing and shooting at the same time, I do that a lot), but I dare to say in court of law that I never touched that "Delete" button. The bad part is that this nearly always happens in the more hard to do battles.
By the way, when I also saw a bug ticket about MacOS X ignoring the backspace key in the console. I suffer from the same bug. Just to let ya know.
For the rest, great work.