The behaviour of the direction keys on the numpad is
inconsistent when numlock is turned off. 
Home/End/PgUp/PgDn and the arrow keys work fine in some
applications (gedit), but do not work in Python's idle.
By not work, I mean: input is silently dropped.

How reproducible:
Always

Steps to Reproduce:
1. Turn off numlock.
3. Open gedit, type in garbage, use direction keys on
numpad to move around.
4. Open idle, type in garbage, attempt to use direction
keys on numpad to move around. It fails.    

Actual Results:  Intense frustration for people who
have been using the numeric keypad as direction keys
for decades!

Expected Results:  When numlock is off, the direction
keys on the numpad should function in the same manner
as the dedicated direction keys.

I am reporting this for Python 2.3, but I had exactly
the same problem in Python 2.2.

This problem has also been reported to RedHat, see 

http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=136600.