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IPB Version     2.2.0 RC 1 (ID:22006)
MYSQL Version     MYSQL 4.1.20-log
PHP Version     4.3.9 (apache2handler) ( PHP INFO )
Disabled PHP Functions     no information
Safe Mode     OFF
Server Software     Linux dev.org 2.6.9-42.0.2.ELsmp #1 SMP Wed Aug 23 13:38:27 BST 2006 x86_64
Current Server Load     0.49
Total Server Memory     3269 MB
Available Physical Memory     415 MB

you have to set a max serverload in your ACP

This usually happens due to certain settings, usually the root can get it whilst the accounts under such as yours does not have access to the function; only cpanel(with WHM exception) itself can see it for your account.

You have to set a max serverload in your ACP

Not really useful, I've set one before yet still -- appears

For the server load to show up, a max server load has to be set in the ACP.

Afterwards, try updating your system cache if it still shows --

How do you determine the max server load ?

I believe it's under "General Configuration" in the ACP.

It is under 'CPU Saving & Optimization' in Tools & Settings.