You can download the spanish translation for 2.6
here:
http://wpmudevorg.wordpress.com/project/wmpu-spanish-translation-for-26x
You can download the spanish translation for 2.6
here:
http://wpmudevorg.wordpress.com/project/wmpu-spanish-translation-for-26x
I've updated the translation files for WPMU 2.6.5 with both languages, Spanish and Catalan.
NeiL