Yeah, this is ultimately what prevents me from contemplating using Scala in a broader context. I will admit I haven't tried for a while, but every time I've tried out the Scala eclipse plugin it's been incredibly flaky. For the top tier of developers this doesn't matter too much (they can either handle flakiness or do without an IDE at all) but companies specifically do not want to build their systems dependent on constantly having top tier developers to do every little change they need.

You can contrast with Groovy which while still not perfect, has an awesome eclipse plugin and SpringSource offers a whole customised eclipse version for working with their stuff.