iMovie 8.0.2 weighs in at 24.5 MB and requires OS X 10.5.6.
This Software Update fixes an issue with projects having a size of 0 KB. Attempting to open these projects would cause iMovie to quit unexpectedly at launch.
This Software Update also addresses a problem where full-screen mode could not be accessed on some systems.
This update improves overall stability and addresses minor issues in a number of areas, including the display of thumbnails on import and image rotation.Update: Apple has also released Server Admin Tools 10.5.6v1.1, which weighs in at 92.7 MB and requires OS X 10.5.6. Information on the update, which includes two changes to System Image Utility and two to Server Admin, can be found in the accompanying support document.