I can not manage to get the polish language work . I read that there can not be any spaces and your are using spaces in langauge files wehn turn on debugging in joomla a lot of errors occured so the language file is not loaded. Strange the same english even with spaces in definitions is loaded. what can be a problem?

i add i am using notepadd++ with utf8 without bom

Hello,

Spaces are still from Joomla 1.5, where it was not a problem. But as you can see, it still work also in Joomla 2.5.
There should be another problem what cause your troubles. Can you post here your translation?

language files