... it would be a dirty shutdown. ( can't be good for your filesystem )
I know this is probably off-topic, but I got curious about this.
Could you clarify why 'shutdown' is dirty and bad for the filesystem? The program seems to do nothing but send SIGTERM to all processes, (then SIGKILL, which isn't really necessary) and changing to runlevel X? (I can't remember which runlevel is for halting the system...)
I would think that this is pretty much what happens anyway, if you select the shutdown item in the menu?
I usually just punch in 'shutdown -h now' in the terminal, rather than reaching for the mouse... If I am risking a filesystem error every time, I would sure like to know it!!!