Comment 6 for bug 342411

No, this doesn't seem to be the problem.

Here with me, the locale - setting is changed so Monday should be the start of week, and in the gnome-panel clock applet it works as it should and shows Monday as the start. But in gnome-do, the calendar shows after a restart and everything still sunday...

And as far as I know, the panel clock applet of gnome takes the setting also from the locales, because in both cases you cannot set the start of week in any "settings" dialogue...