Looks like it's the "adv" script that's causing problems... but I don't think that disabling this script will help at all. Your server is simply serving too much HTTP traffic:
~~~
[root

jojo1 ~]# grep 'GET /' /etc/httpd/domlogs/joreyat.org | wc -l
174554
~~~
174554 requests in about 12 hours. It's going to take more than a 2.4GHz P4 with 1GB RAM to serve out this kind of traffic, especially since all of your scripts are PHP based ...