On Fri, 6 May 2005 07:32:35 -0700, "SteveB"
wrote:

Sheesh. Take the two screws loose that hold it together. Pull out the
assembly. Take it to Home Depot. Take an extra key you have around if
possible. If not, take another cylinder off. Home Depot will fix it for
you and probably won't even have to replace the tumblers.


Probably the lock tumblers were sticky or worn such that the key stem
acquired a small fracture that eventually broke inside the keyhole.
That lockset might as well be replaced. Just drill out the keyslot.
This will wreak the tumblers. That will let you rotate the assembly
to unlock the door and position the assembly so that you can unscrew
the whole lockset.