In the IDEA 9 EAP releases and now with IDEA X 98.231 IDEA does a lot of disk activity when I swap back into it from another app. Based on top, most of the activity appears to be pageins. This can go on for 30 -- 60 seconds and IDEA is mostly unusable. "Synchronize files on frame activation" is unselected as are SVN options that mgiht be doing background activity. The project is a moderately large webapp with a couple of hundred .java files and assorted other files. I don't seem to remember this with IDEA 8. It was a big problem for me in IDEA 9 and still bad in X.
Thoughts on what might be causing this? Or how to stop it; for example, if it is actually synchronizing every time I swap back?
Mid 2009 MacBook Pro, 10.6.4
4GB RAM with typically around 1GB available
7200 RPM drive with 50GB free
JVMArchs and LSArchitecturePriority: x86_64, i386, ppc
VMOptions: -Xms400m -Xmx600m -XX:MaxPermSize=300m -ea -agentlib:yjpagent=disablej2ee,disablecounts,disablealloc,sessionname=IntelliJIdea10 -Xbootclasspath/a:../lib/boot.jar
Some plugins but not a lot; mostly the typical ones.