[V8] Drivers Key turns uselessly

[Mark Kalbskopf]

Last night I went to lock the car and the key turned but had no effect 
- actually that's not quite true, It had no mechanical effect on the 
lock knobs but it did set the alarm. Ditto with unlocking.
So now I have to make a trip around to the passenger door to get in.
I remember that on the 5000 the door handle would always break but I 
don't remember the key not working.
Anyone familiar with this?

Mark K
Chantilly Va
90 V8