No meu caso, o httpd.conf estava causando problemas. quando eu removi servidores virtuais criados através do webmin, funcionou. e reconfigurou o mesmo.
NameVirtualHost *:80
<VirtualHost *:80>
ServerAdmin [email protected]
DocumentRoot "/usr/local/apache2/docs/ebugs"
ServerName ebuqs.com
ServerAlias www.ebugs.com
ErrorLog "logs/ebugs/error_log"
CustomLog "logs/ebugs/access_log" common
</VirtualHost>
<VirtualHost *:80>
ServerAdmin [email protected]
DocumentRoot "/usr/local/apache2/docs/startfromthegrub"
ServerName startfromthegrub.com
ServerAlias www.startfromthegrub.com
ErrorLog "logs/startfromthegrub/error_log"
CustomLog "logs/startfromthegrub/access_log" common
</VirtualHost>