Fun stuff: VisiOn kernel has a memory-leak. Clicking the menu ~200 times in any app results in running out of memory, and eventually the system crashes. The easiest way to replicate the bug is to press "Esc" down (it will send the Escape key event over and over); it won't even do anything, just redraw the menu.
:D Please, don't let me fix a 42-year-old bug in an OS :D
Edit: it is a memory leak caused by the "display beeps as screen flashes" function :D
