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I'm also having this problem on Mac OSX Mavericks (10.8.5) and Sublime Text 2 (2.0.2) - I also had the same problem with Sublime Text 3.

My project is stored in Dropbox and it does contain a Git repository. This seems to be a Mac-specific problem, however, because until 2 weeks ago I was using Sublime Text to work with this same project on Windows 7 with no issues.