I have exactly the same problem with a Windows Live Movie Maker file and 3.7.52. My "home" image is a JPEG menu. I then wait on a GPIO and depending which one is presses, play one of two files (both files were made using Movie Maker). When the file is done playing, I go back home to the JPEG image. The freeze happens right at the end of the video file before the JPEG is displayed again. Freeze time is around 17 seconds. Project was compiled with BrightAuthor.