Originally Posted by Zeferint
Assuming it's the stock alarm and you don't have an aftermarket one, I would test to see if the main relay is bad. I can't imagine that it's the actuator because the actuator only locks (or unlocks) the doors when it receives electrical current, so something is telling the actuator to lock when you shut the door. Hence, the main relay is your best bet.
Yea, this car is completely stock. thanks for the input. it quit doing this later that day and hasn't done it again... (yet!) but if it does i'll have 1/2 a clue were to look, thanks.