All my zeiss lenses go slightly past infinity too.
Like Luka, I also believe this is by design. In the past I\'ve read numerous stories about the possibility of the temperature affecting the mechanical infinity stop of a lens.
If this is really true? I don\'t know.
It doesn\'t really bother me. When you want infinity: just turn the focus ring all the way to the infinity stop and then pull it back slightly. You get used to it.
A bit offtopic:
Why do these kind of threads full of hate pop up so often? link
