3. Removed SynchronisingObject property. Client and server both now use the SynchronizingContext class to raise all events on the same thread on which the object was created. This means that, in a WinForms app, you must ensure that the object is created on the UI thread if you want to update the UI from event handlers.
Why did you do this? I've often wanted my classes that use background threads to be able to raise their events on another thread but didnt think it was possible - after reading your post here http://www.vbforums.com/showthread.php?t=589212 I realise that it is possible but I'm wondering if there was some problem you found with doing this that caused you to remove such a feature?