Lang. Packs doesn't work (IceCat4)

[joel badia escolà]

Hi,

I compiled from the source Icecat4 in "debian squeeze" (64bits version) and seems that all work good. But when i tried to install my locale (Catalan "ca.xpi"), the installation seems that works, but when i rebooted icecat the language doesn't changed, i test the same but for spanish (es-ES.xpi) and the result it's the same...

I take the lang. packs from here http://gnuzilla.gnu.org/download/langpacks/4.0/ 

I hope that you can help me thanks !!!

P.D. Sorry for my english

Joel Badia