Spyro 2 looks like it may well be receiving the same treatment as it suffers from sound issues, during the cutscenes. While this isn't a game-stopper, it is an inconvenience and for first-time players might spoil the experience somewhat. There is no word yet when Medievil will be put back on, but Sony has promised to make a statement "in due course."
Crash Bandicoot 2, which was released alongside Medievil and Spyro 2 last Thursday, appears to be trouble free. For now. Typical, really, as it's the only one we didn't buy.