Sorry for considering it fixed. I shut down the system and rebooted it and now myunity icon has been substituted by a question mark icon. Here is the output of apt-cache policy myunity:
edubuntu@edubuntu:~$ apt-cache policy myunity myunity: Installato: 3.1.1-0ubuntu1 Candidato: 3.1.1-0ubuntu1 Tabella versione: *** 3.1.1-0ubuntu1 0 500 http://archive.ubuntu.com/ubuntu/ precise/universe i386 Packages 100 /var/lib/dpkg/status W: Duplicate sources.list entry http://archive.ubuntu.com/ubuntu/ precise/universe i386 Packages (/var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_precise_universe_binary-i386_Packages) W: Duplicate sources.list entry http://security.ubuntu.com/ubuntu/ precise-security/universe i386 Packages (/var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_precise-security_universe_binary-i386_Packages) W: Duplicate sources.list entry http://archive.ubuntu.com/ubuntu/ precise-updates/universe i386 Packages (/var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_precise-updates_universe_binary-i386_Packages) W: È consigliato eseguire "apt-get update" per correggere questi problemi edubuntu@edubuntu:~$ ** Changed in: myunity (Ubuntu) Status: Fix Released => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/965176 Title: question mark icon To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/myunity/+bug/965176/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs