[CentOS] Firefox 3.0.1 print error

Hello,

if trying to print
http://www.test.de/themen/versicherung-vorsorge/test/-Unfallversicherung/1260901/1260901/1262782/1262783/
by button "Seite drucken" firefox-3.0.1-1.el5.centos ends in
error '(Gecko:4820): Gtk-WARNING **: Unknown paper size A4' and wants
to print in "Letter". This also happens under Fedora 8 and with the
sources for linux from mozilla.com, but not under Windows XP.

Please, could someone test this under Fedora 9, maybe gtk is broken
under CentOS 5.1 and Fedora 8?
Any idea for a workaround?

$ rpm -qa | grep gtk
gnome-python2-gtkhtml2-2.14.2-6.el5
gtk+-1.2.10-56.el5
gtk-qt-engine-0.8-4.el5
gtk2-2.10.4-20.el5
pygtk2-2.10.1-12.el5
gtkmm24-2.10.9-1.el5.rf
usermode-gtk-1.88-3.el5.1
gtk2-engines-2.8.0-3.el5
gtkhtml2-2.11.0-3
gtkspell-2.0.11-2.1
authconfig-gtk-5.3.21-3.el5
pygtk2-libglade-2.10.1-12.el5
libgtk-java-2.8.7-3.el5
gtk2-devel-2.10.4-20.el5


regards
Olaf