This problem still exists in Feisty Beta. I found the cause of this problem is that the layout string 'jp' is replaced to 'us,jp' in adjust_keyboard function in /usr/lib/ubiquity/ubiquity/components/console_setup.py. I rewrote this file not to replace the string 'jp', restarted installer, and worked fine.
I'm attaching a patch for this script. Colin, would you apply this patch, please? ** Attachment added: "a patch for Japanese keyboard" http://librarian.launchpad.net/7034292/patch_for_console_setup.py -- "Japan" keyboard layout is actually "U.S. English" on installer https://launchpad.net/bugs/63915 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs