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Created attachment 124797 [details] stacktrace Using IDE 7.3 Beta with fresh userdir. I attempted to drag the search box out of the toolbar and into the customize toolbar dialog. IDE hangs and need to force quit the IDE.
It's deadlock between EDT and AppKit thread which locks java.awt.Component$AWTTreeLock in sun.lwawt.macosx.CDragSourceContextPeer.dragMouseMoved
possibly a P2 issue - Ken, is it reproducible?
http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7200762