I tested a specific file for the forum poster 'James'. If you can send us links to specific files we can test them too.
I know how many we've sold and the overall feedback and return rate. Feedback in general has been good and returns (except weirdly for returns from Germany - I think subtitle problems are a large part of the negativity) have been normal.
There's nothing we can do beyond passing on reported problems to Himedia, which we are doing. We await the next firmware, I'm sure it will be an improvement. I hope enough of one to satisfy you.
I'm not going to have another week of circular conversation like last week, so I'm locking this thread and will delete/lock other threads that aren't about a specific issue (with samples we can test) or other support questions.