IGN: Sony Comments on Backwards Compatibility: "Japan's Cnet.com reports backwards compatibility problems for over 196 PlayStation 2 titles. This figure counts multiple versions of the same game (budget versions, limited editions, etc.) as a single entity and includes the full range of problems, from simple sound issues to more dramatic freezing issues.
In response to these issues, Sony's PR department pointed out that it, from the start, expected backwards compatibility to be less than 100%. It was also good enough to point out that some people can put up with playing games that lack sound.
Regardless of this somewhat arrogant response, an official statement issued at the PlayStation.com site states that Sony will fix the problems with a future system update, and may even resort to individual patches for certain titles. When this will happen has yet to be specified."
Sony is such an asshat. This is ANOTHER point they tried to use to deride the 360 that not all games are backwards compatible and then they have the same issue.