Ajax.php and Server Overload

[ColdSpirit]

Hello all,

Each and every time i have the ajax.php file in the server the server load increases greatly!!

There is any chance to "optimise" the file or ading another optimized?


Cheers

[ColdSpirit]

Only a few users are online...
Generaly are only 30/40 user max... 10 members and the rest guests..

it is really annoying because i cant use Ajax :|

Cheers,
ColdSpirit

Here is my ajax.php code:

removed 

There is any way to optimise this code so when ajax.php file is on the server the server loads from 1.30 to 6.00?
[Server Loads: 1.29 1.78 : 2.90] (without ajax.php)
[Server Loads: 5.85 2.98 : 2.95] (with ajax.php)