I recently upgraded a Linq beta product from the Beta to Final Release.

Lucky there were very few errors except for the default methods of add and delete on the System.Data.Linq.Table. The replacement methods are now InsertOnSubmit or DeleteOnSubmit. It is interesting to think that the conversation's that took place to make such a fundamental change to one of the methods. Obviously it the new methods are more descriptive but the amount of coding hours it has cost beta developers makes you wonder. I now always think twice about naming public methods.