I've received email that there has been a bit less responsiveness from Microsoft employees on some of the Silverlight Forums recently.
This is an impression, but to the extent it is true, it wouldn't be terribly surprising. Speaking only for myself I know that I've been swamped with getting ready both for MIX and for the release of Silverlight 2.0 Beta (we'd like to have a number of "How Do I" Videos ready to go, along with a lot of other material, so that folks can jump right into making use of the Beta.)
The folks who have code-path responsibility for Silverlight 2.0 Beta are, of course, totally immersed, as you might expect.
I think it is fair to guess that the forums will see a bit less participation by some Silverlight Developers during what remains of the first quarter, but that doesn't mean total abandonment; it just means that human nature being what it is, many folks will find the time slipping away, and there will be things they want to get to that they just won't find the time to do (like, for example, seeing family!)
To the extent that I too will be guilty of slow response time, I apologize in advance, because like many in Dev-Div, I truly believe that the forums are incredibly valuable; providing us with important feedback on what we need to clarify and fix, while offering a way to answer questions for the Developer community.
All I can do is thank you for your patience and promise you that Silverlight 2 Beta will make up for the wait!