I have a large project about 200 packages. It takes less than 3 minutes to recompile the project using ant build.xml compile task.
When I tried to recompile the project with 922, IDEA is taking forever to compile. IDEA seemed to lock up my CPU even more than before, and the progress in the Ant Build messages window was much slower (like 50X slower). After 30 minutes, I just killed IDEA.
I restarted and tried again, and the same thing happened, except I killed it after 10 minutes.
This is using the same project file and same build.xml that was working under 977 build.
I just switched back to build 977 and the project recompiled fine in 2.5 minutes.