Apple has posted an update for all the components of its recently released iWork '08 productivity suite.
Numbers 1.0.1 (26.1MB) [1]
This update primarily addresses issues with tables and performance.
Pages 3.0.1 (27.8MB) [2]
This update primarily addresses issues with change tracking and performance.
Keynote 4.0.1 (31.1MB) [3]
This update primarily addresses issues with builds and performance.
iWeb 2.0.2 (17MB) [4]
This update to iWeb addresses issues with upgrading iWeb 1.x websites, and fixes some common publishing problems, and supports general compatibility issues.
Note
In order to install this update you will need to download the iLife Support 8.1 [5] update first. The iLife update supports system software components used by all iLife application, improves overall stability, addresses a number of other minor issues and supports general compatibility issues.
All these updates are available either through the Software Update utility or through Apple's support web site (follow the above links).