Lots of folks are writing in to let us know about the iLife '08 update waiting in Software Update. The iLife Support 8.3 update, 'provides system software components shared by all iLife '08 applications. This update improves overall stability and addresses a number of other minor issues. It is recommended for all users for iLife '08.'
At the moment this update is only available via Software Update, but we'll update this post when Apple posts the update on their site.
Thanks to everyone who sent this in.
Update: You can grab the installer here.