[frio]

It might be worth trying the ScalaIDE Eclipse plugin - I think it works with Helios now. That said, I had so many issues using it half a year ago I went and learnt to use emacs with scala-mode, which, combined with sbt ~test, has worked out brilliantly.

The only thing I'd really appreciate an IDE for is mass refactoring (my project is at a point now where it's all a bit badly organised).

[jfager]

If you're using emacs to write Scala, you should check out ensime: https://github.com/aemoncannon/ensime

[krisneuharth]

My similar bad experience with Eclipse took me to IntelliJ with the Scala plugin and it has been a markedly better experience these last few months. The refactoring abilities in IntelliJ are pretty good so far.

[Stormbringer]

Some people, when confronted with a coding problem, think "I know, I'll use an Eclipse plugin". Now they have three problems.