ImageEngine/gaffer — pull request #714 by johnhaddon (2014-01-15 12:09:07+00:00)
Title: Fixed threading issue in GafferImage::Display node.

Access to the tiles in the display driver is now protected by a mutex. I believe this should fix the crash that Mathias described in INC536463. I was able to reproduce the crash a couple of times (but not reliably) before attempting a fix, and haven't been able to reproduce it since.