Hello, Recently it is not possible to upgrade using Yakuake command prompt. After issuing the command: $ sudo apt-get upgrade it displays the usual information and the prompt to press Y to proceed. Alas it aborts without waiting for user input. Seems some other process is feeding input or the wiring is tampered. This phenomenon does not appear in Konsole or mlterm. A similar report resides: https://askubuntu.com/questions/509852/why-does-apt-get-abort-by-itself-as-though-id-pressed-n
Bug does not appear after a system update.