Firstly - I think IntelliJ (from a functionality perspective) is one of the best Java apps ever. However, I have two concerns with the latest version on the Mac platform.
Firstly, it is SLOW. It kills my G5 1.8GHz with 1.5GB RAM. I see that as a serious machine - any application (especially an IDE) should not be able to bring it to it's knees. For example - typing an unknown method's name as a call, and then pressing "Ctrl+Enter" to create that method takes about 3 seconds if it has say 4 arguments. That is completely unacceptable.
Secondly, if I press Ctrl+Enter on some actions, sometimes (mostly) the window focus is lost - i.e. IntelliJ's window does not have the focus anymore. This is seriously annoying since I have to use the mouse to click on it to make the window active again. Also, Command + ` does not switch between frames anymore. Both these issues were not present with IntelliJ 3.0.5.
Any ideas for improvement?