I've installed F15 Gnome 3 and after a while in using this interface, I decided I rather go back to the LXDE desktop. so I've removed GNOME and installed LXDE.
I'm not sure if it worked in GNOME 3 - but now in the LXDE I'm unable to install software using Add/Remove Software applet or check for software updates.
When I attempt to do so - I get an error message telling me that "Authorization failed" - it doesn't even prompt me for the root password and I've resorted to having to do the install of new software and updates through the command line using "yum install ..... " and "yum upgrade".
Does anyone know how to resolve this issue?