By "Soft" hang I mean that the UI appears responsive, but the pending view never re-populates forcing a quit and restart of the App. It's unusable. Here's the recent console log. Screenshot attached.

01/07/2014 10:47:55.702 SourceTree[50710]: SourceTree(50710,0x10f424000) malloc: *** auto malloc[50710]: error: GC operation on unregistered thread. Thread registered implicitly. Break on auto_zone_thread_registration_error() to debug.
01/07/2014 10:47:55.789 SourceTree[50710]: registerCustomValueTransformers on main thread
01/07/2014 10:47:55.829 SourceTree[50710]: Could not obtain git dir, /Users/jools/Desktop/Documents/Code/monodevelop is not a git repo.
01/07/2014 10:47:55.832 SourceTree[50710]: Could not obtain git dir, /Users/jools/Desktop/Documents/Code/monodevelop-addins/unity-mimetypes is not a git repo.
01/07/2014 10:47:56.377 SourceTree[50710]: CoreData: Error: Unable to dynamically link Librarian.framework
01/07/2014 10:47:56.863 SourceTree[50710]: BUG in libdispatch client: kevent[EVFILT_WRITE] delete: "No such file or directory" - 0x2
01/07/2014 10:54:02.515 SourceTree[51309]: SourceTree(51309,0x10275f000) malloc: *** auto malloc[51309]: error: GC operation on unregistered thread. Thread registered implicitly. Break on auto_zone_thread_registration_error() to debug.
01/07/2014 10:54:02.605 SourceTree[51309]: registerCustomValueTransformers on main thread
01/07/2014 10:54:02.647 SourceTree[51309]: Could not obtain git dir, /Users/jools/Desktop/Documents/Code/monodevelop is not a git repo.
01/07/2014 10:54:02.649 SourceTree[51309]: Could not obtain git dir, /Users/jools/Desktop/Documents/Code/monodevelop-addins/unity-mimetypes is not a git repo.
01/07/2014 10:54:03.251 SourceTree[51309]: CoreData: Error: Unable to dynamically link Librarian.framework
01/07/2014 10:54:03.789 SourceTree[51309]: BUG in libdispatch client: kevent[EVFILT_WRITE] delete: "No such file or directory" - 0x2