I can confirm that there are 2 Render submenus (one localized, the other in english) and a Color menu (untranslated). This appears regardless of the language chosen for the interface, with the exception of english (where the Effects menu has a single Render submenu, as it should be). I am using PDN 3.31 on XP SP2. The installation is an upgrade from PDN 3.30.
Later edit: I have unistalled PDN and the reinstalled it. The duplicate menu does not appear anymore and also the Color menu does not appear. It seems that in PDN 3.30 the Ed Harvey effects were included in the installation and they cau