Comment 1 for bug 879453

I don't remember the rationale for that restriction, if there is one. users-admin is a cross-platform tool, so one would have to check that all platforms allow upper case letters before making such a change. Anyways, the gnome-system-tools are deprecated now, and nobody is working on them, so I don't see this change happening. Users shouldn't have to deal with Unix groups on normal systems - if they do, that's a bug in the relevant packages.