Just checked my Software Update today (I do it most days) just thought I would post for anybody that's interested that an update for iWeb was released today!
Details below...

iWeb Update Version 3.0.3 Size 185.9 MB

This update contains bug fixes and improvements, including the following:

Addresses an issue when using the iSight Movie widget on certain Macs

Addresses an issue publishing iWeb sites using FTP

Improves compatibility with Mac OS X


- Simon