My Apache wount work

[Mardwan]

Hi. I am using Xammp on ubuntu. When i installed it yesterday, apache was running well but now i get this message whenever i do sudo /opt/lampp/lampp start

XAMPP: Starting Apache with SSL (and PHP5)...
XAMPP: Error 1! Couldn't start Apache!
XAMPP: Starting diagnose...
XAMPP: Sorry, I've no idea what's going wrong.
XAMPP: Please contact our forum http://community.apachefriends.org/f/
XAMPP: Another MySQL daemon is already running.
XAMPP: XAMPP-ProFTPD is already running.
XAMPP for Linux started.


could anybody help? Thank you in advance.

[JonB]

If you don't shut down your machine or use 'sudo /opt/lampp/lampp stop', there is no need to re-start XAMPP