Pygame troubles; paddles not moving in Pong!

So here is my program. Essentially, when run through the Python 3.2.2 Launcher on Mac 10.6.8, pressing the up/down or w/s keys does nothing to the paddle. The space button does work however, its just takes multiple presses to get it to work. Is this because the event.key is wrong? The tutorial I used to make this was using Python 2, so it might be old. Or is it because the FPS is capped at 60? But the press event would still be in the list.... All ideas are appreciated. In case you for some reason need to run the program, here and here are links to images that should go in a folder named "images" that goes in the same directory as the script. Thanks in advance for any help.