In December, the Picasa Web Albums Uploader added support for downloading a photo album to your Mac. We’ve recently updated the Uploader to include the ability to download all photos from all albums in your account. To start the download, sign in to your account with the Picasa Web Albums Uploader application and select the Existing Album tab. Holding down the Mac’s Option key will change the title of the Download Album button to Download All. Then one click will bring all of your albums home.
This update also improves reliability of the uploader’s iPhoto export plug-in. The uploader typically keeps itself up-to-date, but you can also get the latest version, 1.3.1, from the download page. Please let us know how it works for you in the Mac Uploader area of the Picasa Help forum.