CI returns invisible symbol string to jquery ajax

[eluser]Edgars[/eluser]
When I remove

Code:

$this->lang->load("language", "ENG");

I get correct length and AJAx response is ok - "eds". If that something means then header have Content-Length 6

With

Code:

$this->lang->load("language", "ENG");

I don't get correct length and AJAx response is still ok - "eds". ". Header Content-Length 9

Can't understand what is has to do with language? Maybe It's just coincidence.