Comment 23 for bug 180087

I received this error message " SELinux was found but is not enabled" from gnome-system-monitor too. So I searched for answers and I found via wikipedia this site which states that SELinux is not enabled in Ubuntu 8.04 by default. So the error message in gnome-system-monitor isn't an error message at all. To resolve the problem you'll have to install the SELinux package from synaptic or simply type at the konsole:

sudo apt-get install selinux

I wonder why the hell selinux isn't enabled by default. (see also http://ubuntuforums.org/showthread.php?p=4910260#post4910260)