You know, after several years of use, a door latch can simply wear out, especially if it's in a high traffic area like this. Or maybe you just want to change your decor with a new latch. Whatever your reason taking out an old latch and putting in a new one, can really be done in just a few minutes. Maybe the hardest part of the job, as a matter of fact is getting the old knob off. Now what you need to find on some of these is what I call the magic button, located right here. Press it, and the doorknob pulls right off. Next, remove the trim ring by inserting a screwdriver in the small slot on the side and giving it a twist. Now, loosen or remove the two screws that hold the latch assembly in place and slip it out. Finally, remove the two screws that hold the latch bolt in place. Now, with everything out, we just reverse the process to put in the new latch.
Well, there you go, five minutes of work and probably 15 years of use before you have to replace it again.