I'm evaluating IDEA at the moment, and so far I love it. One of the things I've noticed that AFAIK I can't do is rearrange the windows very flexibly. Specifically, I have a high-res, widescreen monitor, and I can't find a way to stop the messages window from extending the whole width of the screen. Similarly, I can't find a way to split the side tool windows (to stack my Ant window with my project window on the left, for example. My previous environments (Eclipse and Gel) allowed me to do this easily.
Am I missing something obvious here? It seems like an odd restriction in what otherwise seems like a really flexible IDE.