For some idiotic reason you can not simply download entire webalbums from google's picasa.
Well, actually you can:
1) Sign up to and download the software from picasa (not even an option for Pandorians)
OR
2) Download each foto separately with your internet browser

Cumbersome? Damn right!

But fear not! Grabicasa saves your day!
It will allow you to search and download:
- all public webalbums of a given picasa user
- a specific (i.e. private) album with a given RSS link to that album

To get the RSS link you would simply click on the RSS button while browsing the album in your browser. The link must follow this pattern:
https://picasaweb.google.com/data/feed/base/user/enterusernamehere/albumid/numericalbumidhere?alt=rss&kind=photo&authkey=authkey

This little app is actually written in python and as such it uses only 255 lines of code. The GUI is written in Tkinter, which makes use of Tk/Tcl, which unfortunately are not part of the OS. The huge size of the PND is due to the fact that it packages it all together: python 2.6 and all the necessary modules plus Tk and Tcl 8.5

Please enjoy and if you like, leave a comment :)