Re: Apache un-able to understand.

[Ivan Adams <ivancho.b@gmail.com>]

try with:
netstat -na | grep LISTEN | grep :80
it would be something like
tcp 0 0.0.0.0:80 0.0.0.0:* LISTEN
that mean that your server is already running.

Try again with http://127.0.0.1/ or http://localhost/
if no test page, time to view the logs.

tail -f /var/log/apache/error.log
/etc/init.d/apache restart
if no test page

tail -f /var/log/messages
second console 
tail -f /var/log/syslog
/etc/init.d/apache restart

if no test page. 
dpkg-reconfigure apache
if no test page ... send all logs and then try again

Regards