Apple has posted updates for its GarageBand consumer audio application, part of iLife 08 as well as for QuickTime.

GarageBand Update 4.1.1 (48.7MB)

This update improves overall stability and addresses issues with file export to iPhone.

QuickTime 7.3.1 (55.8MB)

QuickTime 7.3.1 addresses security issues.

For detailed information on this update, please visit this website: http://docs.info.apple.com/article.html?artnum=61798

Both updates are available either through the Software Update utility or through Apple's support web site.