Possible causes of a "No crank" situation include:
PATS fault (Module or Key)
Ignition switch fault
Clutch interlock fault (if manual)
Neutral Safety Switch fault (Automatic)
Starter relay or solenoid
Starter
Cabling
Did you try using a spare key to see if that would work? Those goofy PATS keys could cause this exact problem.
Is the "THEFT" light giving off a three flash code (or any other) when you try to start the car?
Steve