Hi:
I have a problem capturing K_SPACE keydown events with pygame.
The code is:
.... dirty test code........
def OnEvent(self, event):
        if event.type == pygame.QUIT:
            self._running = False
    else:
        self.container.objects[0].doEvent(event)
.... more dirty test code.....
def doEvent(self, event):
    print  `event`
    if event.type == pygame.KEYDOWN:
            if event.key == K_SPACE:
                self.fire()
            elif event.key == K_LEFT:
                self.moveX(-1)
            elif event.key == K_RIGHT:
                self.moveX(1)
            elif event.key == K_UP:
                self.moveY(-1)
            elif event.key == K_DOWN:
                self.moveY(1)
        elif event.type == pygame.KEYUP:
            if event.key == K_LEFT:
                self.moveX(1)
            elif event.key == K_RIGHT:
                self.moveX(-1)
            elif event.key == K_UP:
                self.moveY(1)
            elif event.key == K_DOWN:
                self.moveY(-1)
That way, if I push the keys rigth and up at the same time an after 
the space, the spacecraft shots bullets (executes self.fire()) while 
going up and to the rigth... but if i press rigth and dow, left an up 
or left and down an after press fire... the spacecraft don't shot!! 
-but moves well- O_o Also, the 'print' shows me that no 'keydown' 
event for space (nor for alt not altgr) is captured when there is no 
fire....
I have solved it by mapping the fire to another key:
if event.key == K_x:
                self.fire()
this way works fine, but i have no idea of what is happening... i'm 
new in pygame and it can be a knowed issue...
My keyboard is in spanish and my space bar key fires this event:
<Event(2-KeyDown {'scancode': 65, 'key': 32, 'unicode': u' ', 'mod': 
4096})>
<Event(3-KeyUp {'scancode': 65, 'key': 32, 'mod': 4096})>
and alt and altgr
<Event(2-KeyDown {'scancode': 64, 'key': 308, 'unicode': u'', 'mod': 
4096})>
<Event(3-KeyUp {'scancode': 64, 'key': 308, 'mod': 4096})>
<Event(2-KeyDown {'scancode': 108, 'key': 313, 'unicode': u'', 'mod': 
4096})>
<Event(3-KeyUp {'scancode': 108, 'key': 313, 'mod': 4096})>
I have the same problem in my house (ubuntu 9.04) and at work (wXP SP3)