If you are a Mac user and you applied Apple's Java for OSX 10.5 Update 4 you might be experiencing crashes with IntelliJ 8.1.x. It appears that the software was not tested well enough against the developer preview before the update went GA. You can read more about this here:
http://lists.apple.com/archives/java-dev/2009/Jun/msg00142.html
While you cannot rollback the Java update on the Mac there is a workaround for this issue as described here:
http://www.jetbrains.net/devnet/message/5240216
Here are the steps I used to correct this on my Mac:
Rename this file:
/Applications/IntelliJ IDEA 8.1.3.app/Contents/MacOS/idea
Replace the idea file with the Java system file like this:
cp /System/Library/Frameworks/JavaVM.framework/Resources/MacOS/JavaApplicationStub 64 to /Applications/IntelliJ IDEA 8.1.3.app/Contents/MacOS/
This did correct the issue for me and the software has been stable. IntelliJ was not the only software affected by this update. I also had to get a new version of DbVisualizer (6.5.7) to correct issues with that software as well because of this issue.
