own forum problem

[Slucky]

Intermediate PHP Configuration - You currently have this version

i have this problem
on my forum site always sistem down
just rarely open my forum page http://uziosi.x10hosting.com/forum/
just open a blank page without everything
i need to reload my page 10x to show correctly

[Tue Sep 02 11:38:37 2008] [error] [client 79.101.33.4] ALERT - function within blacklist called: shell_exec() (attacker '79.101.33.4', file '/home/uziosi/public_html/forum/Sources/Subs.php', line 3481), referer: http://uziosi.x10hosting.com/forum/index.php

what that mean
please help

 

[tnl2k7]

Please follow these instructions:

http://forums.x10hosting.com/tutorials/56638-blank-smf-site-read.html

-Luke.