Try running the command to stop xampp,
Code:
/opt/lampp/lampp stop
then running the command to start it.
Code:
/opt/lampp/lampp start
Post the output of the command here.
It should look something like this:
Code:
root@tuna:~# /opt/lampp/lampp stop
Stopping XAMPP for Linux 1.7.7...
XAMPP: Stopping Apache with SSL...
XAMPP: Stopping MySQL...
XAMPP: Stopping ProFTPD...
XAMPP stopped.
root@tuna:~# /opt/lampp/lampp start
Starting XAMPP for Linux 1.7.7...
XAMPP: Starting Apache with SSL (and PHP5)...
XAMPP: Starting MySQL...
XAMPP: Starting ProFTPD...
XAMPP for Linux started.