Occasionally hitting F4 will lock up the tty completely.
I have to switch to another tty and kill -9 the mc process.
This isn't always reproducable, and seems to happen at
random, but it does happen quite a lot, like 1 in 10 or
I've tried uninstalling the RPM, and compiling 4.5.38
myself, and it still did the same thing, so I believe the
problem could be in one of the shared libraries.
I am totally unable to reproduce this at all.