It appears that you are trying to install Gnome shell extensions from Ubuntu Oneirc sources. Although you can usually install packages built for prior versions, Gnome has changed and the shell extension are not compatible with the new Gnome.
The new equivalent of Gnome shell extensions is available at extensions.gnome.org. You must visit the website in your browser while running Gnome. You may be prompted to install in extension in Firefox. It may also work in the Google browsers Chrome or Chromium, but I know it works with Firefox. If I am correct, this is not a bug. Please change it to a question if it is. If my answer is correct, please mark it as answered. Feel free to edit it as appropriate. Following my logic the question should be changed from the error message with Portuguese to: "I cannot," or "How can I," or "Why can't I" ... " gnome-shell-extensions in Ubuntu anymore.[?]" -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1182970 Title: package gnome-shell-extensions (not installed) failed to install/upgrade: a tentar sobre-escrever '/usr/share/locale/zh_CN/LC_MESSAGES/gnome-shell-extensions.mo', que também está no pacote gnome-shell-extensions-common 3.2.0-0ubuntu1~oneiric1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell-extensions/+bug/1182970/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs