I initially thought this was my fault somehow, then I blamed OSX, but now I get the same problem on XP too.
My project has a number of swing apps in it, at some point, IDEA simply decides to stop responding to a bunch of mouse events.
I can for example keep editing, and viewing context menus. Clicking on the close button for the app however does nothing. Likewise, the stop/run buttons in the tool window do nothing, and the console output also seems to stop. In many ways, everything looks 'frozen', yet some things keep working.
Has anyone else seen anything similar?