sphpblog works well in english but it's very buggie in spanish. (I'm talking about the latest revisions fron svc, latest is 90) anti-spam doesn't work again! there are blanks in configuration menus , and metatags are inaccesible.
Thanks, I have fixed the CAPCHA problems in all of the languages files as of svn r98.
As for the missing translations, I'm not sure I'm the best person to address that. I haven't done Spanish since high school. If you have input please let me know.
Also see bug ID: 3578353.