Shared Memory Provider: The parameter is incorrect
You will get this error message if you try to connect to a SQL Server 2000 database from Whidbey (either an app or the Server Explorer in the IDE) using a dot or (local) as the server name (i.e. data source=. in connection string).
This works in previous versions of .NET. I have no idea why it doesn't work anymore. You have to replace it with localhost.
What do you think?