I am using Lubuntu and had to install the ubuntu-sso-login-qt package to fix this problem. This package is in the dependencies of ubuntu-desktop, but not of software-center. Maybe its dependences have to be fixed.
I am using Lubuntu and had to install the ubuntu-sso-login-qt package to fix this problem. This package is in the dependencies of ubuntu-desktop, but not of software-center. Maybe its dependences have to be fixed.