BlueProximity is a tool which detects your mobile phone via bluetooth and locks your computer when your bluetooth phone is out of bluetooth reach. If you move away from your Desktop of computer and the distance between you and computer is more than a certain limit for a given time, BlueProximity will lock it automatically. You can also execute or start any shell command using this software. Once the administrator/User come nearer than the configured level for a set of time, the system will gets unlock automatically.
Last week I have installed “Macbuntu” on my Ubuntu 10.04 system which looks fabulous but it was putting extra burden on Resource of my system. So, I un-installed it and after reboot it was just like fresh installed system i.e. all my customized settings, desktop, wallpapers were switched back to default settings.