[Koha] create blank bibliographic record french only..?

Dear koha experts, We are currently evaluating koha, and have noticed the following behaviour: The "Create a Blank Bibliographic Record" screen is displayed in french, where the rest of the interface is in english. We would like everything to be in one and the same language. :-) (meaning: english) Is this a bug in the translation, or do I need to change a setting, somewhere? (template is npl, but happens in default as well) System: Suse Linux Enterprise Server 9 x386 (completely patched) and koha 2.2.5 Kind regards! Mourik Jan