After closer inspection, the problem is that the link in the GtkAboutDialog is given as "www.ubuntu.com" and not "http://www.ubuntu.com". Attached is a trivial patch to fix this.
After closer inspection, the problem is that the link in the GtkAboutDialog is given as "www.ubuntu.com" and not "http:// www.ubuntu. com". Attached is a trivial patch to fix this.