I got the same problem a few minutes ago, from a fresh install (Ubuntu 64 bits - Gnome classic). The system switch to Chinese without any apparent reason. I have no Chinese package installed (as long as I know), I don't even know how Ubuntu can translate the UI in Chinese without the Chinese package...
I notice that the language settings for the system was still in English, but the user management setting had switch to Chinese: Cog (in the top right corner of the top panel) > System Settings > System > User Accounts (bottom right icon) Language: Chinese (why? I switched it to English and that fixed the problem) I don't want to reinstall, but I think the following steps may reproduce the bug: 1. Add an extra keyboard layout; I added the French Canadian keyboard (Cog > System Settings > Personal > Keyboard Layout) 2. I clicked on Layouts tab, added the keyboard, than I clicked on the System tab. At the bottom of the Screen, it was showing "Format: Chinese". The system was still in English at that time. Your settings * Display language: English (not sure) * Input source: English (US), French (Canada) * Format: Chinese System settings * Display language: BLANK * Input source: English (US) * Format: BLANK 3. I clicked the Language tab. For some reason, Chinese was the first one and of the list and it was selected. I manually selected English. After reboot, the system was in Chinese... What I think happened: There is nothing selected for the System settings, so nothing to fallback to when the user has no selection (for language, format and maybe other locale settings not shown there). I suppose that Ubuntu choose the first of the list (alphabetic order) which is Chinese. I can't uninstall Chinese (it seems like it's not even installed). I hope that can help to track the bug. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1024800 Title: Ubuntu 12.04 switches to Chinese language To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-screensaver/+bug/1024800/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs