I'm giving IDEA X another try on one of my fairly large Scala projects and am seeing a bunch of "IDE Fatal Errors" that thankfully aren't, so rather than ignore them or switch back to Maia like I usually do, I'm going to start submitting them. They start at #222207 and I'll submit any I see in the next few hours that look unique.
If there's some more constructive (but still preferably low-effort ;)) way to report these, please let me know. :)
Ubuntu 10.04 64-bit on a Core i7 920
IDEA X 98.117
Scala plugin 0.4.189
... oh wait, I just realized I was running IDEA under JDK7, so now I'm going to switch back to 1.6 and continue from there.
Sun JDK 1.6.0_20-b02 (64-bit, Ubuntu package sun-java6-jdk 6.20dlj-1ubuntu3)