justhost shut my site down due to excessive CPU and disk use

i got a similar problem to http://www.zen-cart.com/forum/showthread.php?t=156511 , i didn't upgraded yet and my hosting company disabled my account too, now i can try to fix it, but i don't know what to do.

I use justhost service and this is the report

Top Process %CPU 21.0 /usr/bin/php /home//public_html/index.php
Top Process %CPU 19.0 /usr/bin/php /home//public_html/index.php
Top Process %CPU 12.0 /usr/bin/php /home/~~/public_html/index.php
MYSQL ~~ 15 %

I'll try the module pointed above.

just a update,

I found tha my website was creating thousands of error logs files due some warning messages and debug module.

I corrected the issue and now i'm waiting a awnser from justhost, if all turns ok I will post here