Kinda sounds like a problem I have had several times... I can hear the locks click and the little knob on the door will even go up and down but when you try to open the door you can't. I have tried several things but the best one is this:

with one hand pull up real hard on the door lock knob while at the same time work the door open lever in and out. I always have had to use the inside handle to do this but after a minute or 2 of doing this I can feel the lock knob kinda moving and then it will sorta give a little and then the door will open. I do not know why it does it and I can't reproduce the problem reliably - it is some kind of binding happening on the inside.

Good luck,

Mark <img src="/forums/images/graemlins/patriot.gif" alt="" />