From: KOSAKI Motohiro Date: 2012-02-23T10:09:02+09:00 Subject: [ruby-core:42819] Re: 500 reputation stackoverflow question about Ruby GIL > No, it fails same way on all my OSX versions from 10.5 to 10.7 > Do you mean that you don't experience any difference resizing a Tk > window with worker thread started and without worker thread started? Sure. No difference.