After creating several accounts using english as the language base a change at logging time to portugues BR does not show the accounts any more…
SuiteCRM does not have an official Portuguese language pack as default, so you may be using a SugarCRM CE pack that is not supported. Can you link to the language pack you are using?
You are correct.
I am using the Language pack for Sugar CE 6.5.3 available on this link http://www.sugarforge.org/frs/download.php/9578/SugarCE-6.5.3.zip.
Does the language pack have similar issues on a standard SugarCRM installation? If there is not a SuiteCRM version of the language pack, this would need to be developed as there are many differences between SugarCRM CE and SuiteCRM.