title: Scala debugging under IntelliJ is horribly slow
body: <p>I'm currently tracing through a relatively small Scala program (Apache's Kafka) with IntelliJ 10.5.4, while at the same time running several other Java applications in another project.  While the Java applications are doing just fine, the Scala debugging is horribly slow, a simple "Make Project" will take easily 2 minutes, and even basic cursor keystrokes take up to a second each to reflect on the screen. </p>
  
  <p>I've used IntelliJ before with as many as 6 applications running at the same time, under multiple projects, and it doesn't have any problems at all.  Hardware isn't an issue either, this is all running on a very recent Macbook Pro (256GB SSD, 8Gb RAM, quad-core i7), under Java 1.6.0_31.</p>
  
  <p>Are there any tips/tricks to making Scala perform decently while debugging under IntelliJ?  Alternatively, what are people out there using for Scala debugging?</p>