The /usr/X11R6/lib/X11/app-defaults/BibView included in the rpm is actually
"BibView.ger", hence all menues are in german. I don't care since german is
my native language, but others might be confused;-)
I have fixed the patch so that it doesn't do lthis anymore. You should be able
to find it in rawhide the next time rawhide is updated (bibview-2.2-9).
Works now. Thanks.