[otrs] gd graph unicode

Hello, Our otrs-3.0.6 stat gd graphs does not show unicode simbols (lithuanian) correctly. Print format works as expected - everything is fine. I have tried to search google and found old bug: http://lists.otrs.org/pipermail/otrs/2006-January/010001.html But this bug is fixed already. Any suggestions, how to fix unicode in gd graphs? Thank You. -- mv