To uninstall Just Cloud please do the following:
Windows XP:
From the Start menu, select Control Panel > Add/Remove Programs > Just Cloud. Click Uninstall. Just Cloud will be completely removed from your system.
Windows Vista and Windows 7:
From the Start menu, select Control Panel > Programs and Features > Just Cloud. Click Uninstall/Change. Just Cloud will be completely removed from your system.
Mac OS X:
Locate the Just Cloud icon in your Applications folder and then simply drag it to the Trash.
Linux:
Open a terminal window and enter the following command and press enter:
$ sudo apt-get remove Just Cloud