Apple has released a maintenance update to iMovie for the iPhone 4 addressing several issues with the 1.0 version.
iMovie 1.0.1 improves reliability when exporting movies containing photos, resolves issues with music playback within a project and promises additional performance and reliability improvements.
iMovie is available from the App Store in the U.S., U.K., France, Germany and Japan for $5 and is a free update for current users.