Why is my PyGame core module so slow?

I planned to write code in Pygame, and I was just starting out with the basics and found that the executable code was very slow. When I press a key, it takes some time to print it in the terminal (there is no picture for it).

I am running Python 2.6, after having run into this problem, I refused. Upon further testing, I found that the whole system was slowing down . Has anyone come across this or got a solution so that it works faster and / or prevents the system from slowing down?

OS - Ubuntu Hardware - Macbook Pro

import pygame
import pygame.locals
pygame.mixer.init()

screen = pygame.display.set_mode((640, 480))
pygame.display.set_caption("bla")

background = pygame.Surface(screen.get_size())
background = background.convert()
background.fill(pygame.Color("green"))
screen.blit(background, (0, 0))

looping = True
while looping:
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            looping = False
        elif event.type == pygame.KEYDOWN:
            keyName = pygame.key.name(event.key)
            print "key pressed:", keyName

            if event.key == pygame.K_SPACE:
                print "Loading Music"
                pygame.mixer.music.load("born.mp3")

            elif event.key == pygame.K_ESCAPE:
                looping = False

    pygame.display.flip()

If there is additional information that I can provide, I would be happy to help.