The NumLock is not activated by default at start-up (in FC-9/10). I am not sure of the fact in other distros. Everytime when the computer starts, you have to manually activate the NumLock key.
The following solution works :
Execute the following commands as root in a terminal.
1. Install numlockx
yum install numlockx
Install using numlocx rpm.
rpm -ivh numlockx*.rpm
3. At the end of the file you will find a line like
Above this line add the following code
if [ -x /usr/bin/numlockx ];
then /usr/bin/numlockx on
4. Save the file and restart the computer.
You will find the NumLock activated by default at startup.