I have an issue whenever I use any program that requires root authorization. For instance, trying to install software via Ubuntu Software Center yields a black "pop-up" prompting for root credentials; after I input them and hit enter, it lags a little and just displays the message: "Sorry, that did not work. Please try again."
Of course my password is correct, otherwise I would not be asking here.
I've read somewhere that there's a gk-sudo and it is useful to circumvent this issue, whenever I know the name of the program I want to use, but I'd rather have the "usual" sudo working and be done with it.
And yeah, usual sudo (as in within terminal) works just fine. It's just the one in the graphical environment that's broken.
Running Ubuntu 12.10 (quantal) 64-bit
Kernel Linux 3.5.0-22 generic
Gnome 3.6.0 (installed via gnome-shell with apt-get)
Any help is appreciated.