I have a web server running Cent OS 5 with Apache. I have over 1GB of Ram and the MaxSpareServers set to 15. This would be fine under most situations, but for some reason my httpd processes are ballooning to over 150 mb a piece. I was googling around and saw a program called GTop and tried that, but I couldn't find any good tutorials on how to install it. Are there any simple ways to accomplish this?

Am I headed in the right direction or is there a better way to solve this problem?