My random thought for today:
Thunderbird is listed under the "Internet" sub-menu. Evolution is listed under the "Office" sub-menu. Why are they in different places?
Ah... mozilla-thunderbird.desktop: Categories=Email;Network; evolution.desktop: Categories=GNOME;GTK;Office;Email;Calendar;ContactManagement;X-Red-Hat-Base;
As bloated as Evolution is, does it need 7 different categories?