On my installation of Feisty, gksu is unusable as well as invisible, e.g. if I scan my finger when invisible, things won't start at all. In fact I have to do "killall gksu" for things to happen, and if I then try again to start things, I either get a password-prompt (not with "or scan your finger" - this typically happens when I run the update-managet) or things start fine (if I run gksu from a console)
On my installation of Feisty, gksu is unusable as well as invisible, e.g. if I scan my finger when invisible, things won't start at all. In fact I have to do "killall gksu" for things to happen, and if I then try again to start things, I either get a password-prompt (not with "or scan your finger" - this typically happens when I run the update-managet) or things start fine (if I run gksu from a console)