Apple today issued two minor updates to iMovie (now v9.0.1) and Garageband (now v6.0.1), part of the iLife '11 suite. The purpose of both updates is to improve stability and performance as well as address minor issues, such as scrolling in the Project Library in iMovie or fixing an issue in undoing Flex Time edits in Garageband. The updates are recommended for all iLife '11 users.
