Ubiquity 2.6.10
locale.setlocale failed: unsupported locale setting (LANG=en_US.UTF-8)
update_release_notes_label()
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
	LANGUAGE = "en_US.UTF-8",
	LC_ALL = (unset),
	LANG = "en_US.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
update_release_notes_label()
update_release_notes_label()
/usr/lib/ubiquity/ubiquity/frontend/gtk_ui.py:1358: GtkWarning: IA__gtk_progress_set_percentage: assertion `percentage >= 0 && percentage <= 1.0' failed
  self.install_progress.set_fraction(fraction)
Ubiquity 2.6.10
update_release_notes_label()
update_release_notes_label()
update_release_notes_label()
/usr/lib/ubiquity/ubiquity/frontend/gtk_ui.py:1358: GtkWarning: IA__gtk_progress_set_percentage: assertion `percentage >= 0 && percentage <= 1.0' failed
  self.install_progress.set_fraction(fraction)