easily immobilize PythonWin

[Kendear]

How come the following code can so
easily immobilize PythonWin?  (won't for IDLE)
You can't go in the exec window and press CTRL-C

Also, the last printed statement is
always not shown.

--

from time import sleep

while 1:
     # do something
     print
     print "doing something"

     print "I am sleeping..."
     sleep(3)
     print "I just woke up"