我的Apache有时很好有时不行呢？

ighack

我的Apache有时很有时不行呢？
我用的是RHEL-AS4
安装所有包
默认设置
有时候可以正常浏览
但有时候出现

Forbidden

You don't have permission to access /mysql/ on this server.

Additionally, a 403 Forbidden error was encountered while trying to use an ErrorDocument to handle the request.
Apache/2.0.52 (Red Hat) Server at localhost.localdomain Port 80
根目录为
/var/www/html/mysql


我想把根目录改为
/home/www/
但是启动不了httpd