Your Auto Rotation Repair plugin works on wordpress 3.4.2 and contributes a much needed function to the wordpress community. I tested it with my Canon camera by rotating it through a dozen angles. I also tested the four rotations of the new Ipad and they displayed correctly.
The only suggestion I can think of is to have a version that uses ImageMagick. I am using Imagemagick for several photo functions in order to keep the photo EXIF information.
Your plugin does not modify Orientation=1 photos so it covers, at least for my site, perhaps the other twenty percent of the photos that need to be rotated.
So please conside your plugin as active, valuable, and currently used.
Thank you for your excellent plugin.