Ok, I think I understand 'my error'. Here is my hypothesis: Once you give your password, it is recalled somewhere for some time. And it seems not to be in kdesud like man kdesu suggest (saying that kdesu -s kill kdesud, so forgetting all passwords).
So by using adept-notifier, I had given my password, and from there, the window on kdesu whoami is still shown, but whatever you type in for the password, is not tested but used the magical somewhere memory. Still, I expect kdesu should not to ask the password, when it is recalled, that would be less confusing. -- kdesu accept any password https://launchpad.net/bugs/88580 -- kubuntu-bugs mailing list kubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs