I can't reproduce this with a current Gutsy daily build (but to my knowledge nothing changed here since the last Tribe release); I selected English as my language, Serbia as my country, and got Belgrade as my timezone. Are you seeing the timezone in some piece of graphical user interface? What does /etc/timezone say? Sarajevo is the same timezone as Belgrade, so maybe something is displaying one as the other.
I can't reproduce this with a current Gutsy daily build (but to my knowledge nothing changed here since the last Tribe release); I selected English as my language, Serbia as my country, and got Belgrade as my timezone. Are you seeing the timezone in some piece of graphical user interface? What does /etc/timezone say? Sarajevo is the same timezone as Belgrade, so maybe something is displaying one as the other.