So it's a codec issue!

Who'd've thunk it! Using a "dodgy" codec pack causing it. Good to hear this is fixing it! (might teach you to keep away from such things in the future)They are doing their utmost to upgrade/improve & fix issues raised. (and doing a very good job from what I can see)
The issues you talk about are not affecting everyone, and judging by the comments in the forums, only a small amount of people, you might think it's "LOADSA" people, but if it was there'd be 1000's of postings, not the handful that's evident.
Yes it can be frustrating, but screaming "IT'S BROKEN FOR ME FIX IT!" isn't going to help matters.
Patience!
xx