Hi Willy,
I have ZDF in various ways, DVB-C, Hotbird, Astra, Amos 3 (encrypted)...
Two of them have EPG in a different language than German, and the one on Amos 3 has no EPG.
ZDF, Amos 3, 10889V: 1:0:1:64F:6:64:DE80000:0:0:0:
The channels with EPG in another language:
ZDF, Astra 1N, 11953H: 1:0:1:6D66:437:1:C00000:0:0:0:
ZDF HD, Astra 1KR, 11361H: 1:0:19:2B66:3F3:1:C00000:0:0:0:
The EPG is correct, so I guess this has to do with importing multiple languages?