Hi. Something strange has happened while playing with languages configuration in Firefox (v22.214.171.124). GUI was working fine, until I set the preferred language from es, es_ar, en_us, en, to en_us, en, es, es_ar. After I refreshed, I got this:
I set back the language preferences, deleted cache, completelly uninstalled firefox, reinstalled English version, reinstalled Spanish version, switched user default theme from the admin GUI, to no avail.
Logging from other computer works as usual. Logging using IE also works.