David wrote:
Hi.

I've just got home from work today, and my door lock seems to be
catching for no apparant reason!?

What happens, is that the latch that would normally open when you pull
the handle down is sticking inside the actual door, so that when it is
pushed to, it cannot latch onto the door frame and shut to. I can push
at the top of the latch to make the latch come back out, but cannot
find any way of making it so that it doesn't do this. I've tightened
all the screws I can see (all on the outside of the door, as cannot
seem to get to any inside of the door), but it is still doing it.

Anyone any ideas on what I can do to fix this?

WD40 could help, better yet graphite.

If a little lubrication doesn't fix it you may have to remove the lock
and find out why the latch is sticking. Would help if you say brand and
model of the lock or pick a look alike from Google Images