Comment 5 for bug 502172

Just looking at other blueprints and this will help with screensaver (https://blueprints.launchpad.net/xibo/+spec/xibo-screensaver). Once this will be implemented there will be no problem with another app forcing to run Xibo. Screen saver runs *.scr files everytime countdown is finished, so if you have screensaver setup to run after 5 mins, half an hour after Xibo will be running 6 instances.