I'm going to document the things I run into as I transition from the May 2006 CTP of LINQ to the full March 2007 CTP of Orcas. Tonight after sorting out my data source issue I ran into a compile error with my Visual Basic code samples that are using XML Axis properties. The error is "XML Axis properties do not support late binding". Hopefully I'll be able to post back here shortly with an answer to why I'm getting this....

UPDATE:  Thanks to a comment from Avner I figured out that this is due to a regression in the capability of VB9 to infer types.  Previously things worked swimmingly with the following code:

    Dim rss = XElement.Load("rss.xml")
    Dim items = rss...<item>

With the March CTP the type of "rss" needs to be explicitly defined like so:

    Dim rss As XElement = XElement.Load("rss.xml")
    Dim items = rss...<item>

I like the old way better :)