Glad to hear everything turned out ok for you. I agree you handled it well. What, if anything, would you do differently next time?
I had what I believe to be an attempted break in years ago (the cops called it criminal mischief....maybe no door knob rattling?). My response was not what it should have been that night so I did a lot of thinking to refine my plan. To this day I am overly startled when awakened by the sound of breaking glass.
http://thefiringline.com/forums/showthread.php?t=367025
PS...Are you a fan of the world's greatest detective or is your username just a coincidence?