Why are Sony movies not available on Netflix via Xbox 360?

As several gaming blogs have been noticing, Sony Pictures movies aren't available to be streamed via Netflix on the Xbox 360, even though they can be streamed on PCs.

That's very surprising, since no other content is available to stream everywhere except the 360. And of course it's suspicious, since we all know Sony, maker of the Playstation, has an incentive not to make the Xbox 360 experience any better. That's why you can't download SPE movies from the Xbox Live Video Marketplace.

But Netflix's pr person told MTV Multiplayer that it was a temporary licensing issue. I spoke to a source at Sony today and that person vehemently denied that it was an attempt by Sony to keep their content off the 360. It's just a licensing issue, I was told; Netflix didn't have the rights.

I'm not sure what to think. I'm not exactly sure why everyone involved would lie, since they've never hidden the reasons why SPE content isn't available on Xbox Live Video Marketplace. On the other hand, what are the odds Sony would be the one studio with this particular licensing issue?

I guess we'll find out when we see if other studios' content also disappears from Netflix on Xbox 360, or if Sony content becomes available soon. The source I spoke to didn't indicate that the latter was going to happen really soon.

Update: Sony just provided me with the following statement:

This issue is not specific to Xbox or any other individual platform.  Sony Pictures is currently in discussions with the relevant parties to resolve certain licensing matters related to the distribution of its motion pictures.  Given the ongoing nature of these discussions, we don't think it is appropriate to comment further at this time.