Yesterday, LFS application did not closing when pressing "exit" or using alt + f4 (/exit command).

Right before I tried to quit, I left a multiplayer game and got the red message
lost connection to host.

When I pressed the exit button I could see as message window appear with yes and no options. But it disappeared to fast to read the message or to press any of the buttons.

The only way I could close LFS was to switch to windowed mode and used the "X" button in the window caption.

This was the first time I got the error ... and I could not reproduce it so far.

yankman

Your "n" key was stuck on the keyboard possibly? You click exit or esc and the keyboard is sending "n" which would be "Do you want to exit: No"

Sound like a good explanation ... to bad I didn't check for any keys pressed accidently.

Does alt+f4 ing require pressing yes? I thought it just quit straight away.

I tested it ... and it is just as you both said.
If I constantly press the 'n' key I can't close via the exit button but
it still works with alt+f4.
Well at least it is not a big problem for ppl who are addicted to lfs .