I've translated more strings in zabbix/include/locales/pt_br.inc.php file and I'd like to share it again to community. This file is for zabbix 1.8 and above.

Other thoughts:
The strings quoted bellow appear on frontend and they can't be translated (there are no corresponding entries in pt_br.inc.php file):

• Show value "throw map" on items configuration page;
• "Subfilter [affects only filtered data!]" on various pages;
• "In groups" and "Other groups" on Hosts configuration page. Both strings are formed joining two separated entries in pt_br.inc.php file. In Portuguese, the junction of this separated entries in the "English order" makes the set a little bit strange;
• "do" -> button right side of add to group combo-box on items configuration page;
  I've translated the entry 'S_NUMERIC_UINT64' (original value in English is 'Numeric (int 64bits)') but this value doesn't appear in information type combo-box on items configuration page; Aren't negative integer values supported by items?