Jeep locks by itself

My '98 Grand Cherokee Ltd will randomly lock all the doors while its driving, idling, or parked. I have noticed that when it is acting up it will also roll up the driver and passenger side windows. The driver side controls will not work on the power mirrors, power locks, or front power windows when it is acting up.

Is it the in door module? A screwy relay? I need some help please. Today as I was coming into work I could not roll down the windows (fronts) or use the switch to unlock the doors at any time. It seems like the problem was worse and that the system was "frozen" into position.

Thanks in advance.

Nader