The current Plugin (13.9.2007) hangs Intellij (build 7274 and 7269) on startup.
The error message is:
"Plugin AntSupport failed to nitialize:
Please remove the plugin and restart IntelliJ Idea"
After that Intellij hangs and has to be forced to quit (on Macos X 1.4.10).
No other plugins are installed under ~/Library/Application\ Support/IntelliJIDEA70
I have also no idea why the AntPlugin is mentioned in the error message.
Removing the JetGroovy-plugins helps to get Idea running again.