Compression on streaming services?

[orac]

I had a Samsung 40" LED and I didn't really notice compression on say Netflix, but it did have horrible motion trails on darker scenes (same with blu ray).

I now have a Panasonic 39" LED and the PQ was a marked improvement over the samsung and motion trials are non existent... but I am noticing more compression, especially on darker scenes on Netflix, I have fibre optic connection, so fast. I don't see this compression on a decent blu ray.

Is this normal?

(watching Netflix on mainly Apple TV and sometimes PS3).

Thanks