Picasa Web's homepage has been redesigned to highlight the photos recently uploaded by the people you're following. The homepage no longer displays all your albums, so you'll only be able to see the most fresh 8 albums.
"This new design centers around photos that are attractive to you. We wanted to give you faster access to the newest photos from your family and friends along with some great photos from the gifted Picasa community. When you log in to Picasa Web Albums, you will not only see your own albums, but albums that have been common with you, the latest public albums from people you follow, and featured photos from the Picasa community right on your home page," explains Google's Ping Chen.
While "recent activity" has always been a section on the homepage, now you can no ignore it. YouTube's homepage has lately switched to a feed view, a stream of actions popularized by Facebook.
If you don't like the new homepage, bookmark this URL: https://picasaweb.google.com/lh/myphotos or click "My Photos" when visiting the homepage.