I typed sudo apt-get -f install and it is now fixed. I don't know why error happened
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1268718 Title: package libqtdbus4 (not installed) failed to install/upgrade: próba nadpisania "/usr/lib/i386-linux-gnu/libQtDBus.so.4.8", który istnieje także w pakiecie libqt4-dbus:i386 4:4.8.4+dfsg-0ubuntu22 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qt4-x11/+bug/1268718/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs