Today Apple released a massive update for iWork '09 called "iWork '09 Update 3." The update addresses a number of issues with Pages, Keynote, Numbers, and the iWork.com beta site. According to Apple the "Update addresses general compatibility issues, improves overall stability, updates the help, and fixes a number of other minor issues in Keynote, Pages, and Numbers."

The main issues addressed include:

 - Reducing file size of images that have Instant Alpha applied 

 - Managing file size when inserting some movies 

 - Working with dates and durations in the Chart Data Editor in Keynote and Pages 

 - Exporting to CSV from Numbers when using table categories 

 - Improvements to comment notification and security in iWork.com Beta are also included 

Apple is recommending that all iWork users download and install the whopping ~60MB update. You can see the full list of updated features on the Apple Support website, and you can download the update by opening Software Update (Apple menu > Software Update) or by downloading the installer package from the Apple Support Downloads Website.