Bumped the subversion to 2, so the default aspect is set to 1:1. Made "Repeat Image" option time image drawing and bail out early if its taking too long. (quater of a sec max) this could be avoided if the texture was drawn on a quad, but that wouldnt support other image draw options. This is a good short term solution because it was possibly to lock up blender if you zoomed out a long way then enabled "Repeat Image".