Tvheadend

germany umlauts are not working for me in the epg. i've tried eit and thought maybe the channels dont send the correct infos so i installed an xmltv grabber (tv_grabber_linux.mjnet.eu.2012.05.09.jar).
when i look at the downloaded xmltv file all umlauts (utf-8) are correct but in the webinterface and especially the filenames are garbage like "Da kommt was Gro⅞es auf uns zu".

locale -a gives me
C
de_DE
de_DE@euro
de_DE.iso88591
de_DE.iso885915@euro
de_DE.utf8
deutsch
en_US
en_US.iso88591
en_US.utf8
german
POSIX

i dont know whats wrong maybe someone had the same problem and know how to fix that.
i use version HTS Tvheadend 2.99.15.g78213.dirty so maybe something is wrong with that git version but i also tried 2.12 ,... and non of them worked for me