For those of you still playing with the VS2010 and .NET 4.0 CTP bits, be aware that it will stop working on Jan 1st. MS has not released any word if we will be getting an updated CTP or a beta anytime soon. This is a bit unlike them where they had a bit of overlap between a VS CTP and the beta.

There are some ways around this. I found a nice post that covers some of the options and links to the information
http://blogs.msdn.com/granth/archive/2008/12/10/visual-studio-2010-ctp-vpc-will-expire-jan-1-2009.aspx

Basically you need to disable time syncronization for the VPC image.

I was worried about this since the get go. I wanted to do some talks coming up on .NET 4.0 and the new parallelism features but it's very hard to do that when you're not sure if you'll even have a working copy to demonstrate on.