Ric Ford <email@example.com> noted that the System Update 2.0.1 does not replace the Software Update previously released since System Update 2.0.1 does not include MacCheck, a useful diagnostic utility.
Spacebar Magnifies Photos in iPhoto '08
In iPhoto '08, you can choose whether double-clicking on a photo will edit it or magnify it. I prefer my double-clicks to edit photos, but every now and then it's nice to magnify a photo. To do that, even when double-click is set to edit, just select the photo and press the Spacebar.