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Build 070524. I had just opened the options dialog, and adjusted the code formatting options. Closing the options window for some reason triggered "Collecting project dependencies". I placed the caret on a field in the class I was editing and pressed Ctrl-R. The IDE was hung for about two minutes. Thread dump attached.
Created attachment 42993 [details] Thread dump
Can not reproduce. Feel free to reopen if it happens again and please attach the file you were working on in it's state.