HI
when i change from fullscreen to a window, there is no problem, but when i try to change back again, to fullscreen, the game disapears from my desktop. It is still running, cause i can still hear the music. only way to continue playing is "killall vendetta" and then start the game again !!
I am running the game under Mandrake Linux 9.1 and KDE 3.1.4
Graphics : NVIDIA GeForce4 MX 440 / 128 Mb ram
Driver : version: 1.0-5336

is the window destroyed?
...or can you still see an entry in the taskbar?
if so, you could try [ALT]+F3, M, then move it with the arrow keys.
it could just be misplaced.

There is nothing in the taskbar.