Why are concrete function implementations in traits compiled to bridge methods in Scala 2.9.x but not in 2.8.x?
OK it sounds like there is no explanation as to why because it wasn't an intentional change. See this thread:http://groups.google.com/group/scala-language/browse_thread/thread/67f8884081d46912
And the solution is to use the newest snapshot, or, if the future has arrived as you read this, Scala 2.10