[TYPO3] locallang[_tca].php in polish

[Daniel Ditgens]

Hi there,

I have to correct the polish spelling in a language file (eg. tt_news) 
but I am always losing the characters of other translations (the famous 
?). I've tried to determine the encoding of these files but I failed. 
I've switched all my encoding to utf-8 (including output, be, mysql, php 
and apache) but this was no solution.

Is there any hint to solve this character encoding chaos?