I'll start with a sad announcement made by Google
Although Google released Picasa 3.0 for Linux, a company spokesperson said that version 3.5 is only being released for Mac and Windows due to low adoption of Picasa 3.0 among Linux users.
It's kind of sad, because as much I enjoy the Linux's software variety, Picasa is irreplaceable from my point of view. The latest version ported to Linux is 3.0, and.. the latest Windows version is 3.6 which have cool features like face recognition and lots of bugs fixed. I really don't understand why is so hard to maintain the Linux version because even the version installed from Google's repository is emulated with Wine (and probably a little bit changed, but.. the hard work is done by Wine). Anyway, here's how you can have Picasa 3.6 (or the latest) in Ubuntu.
You can skip the first step if you have it installed on a Windows partition,or you can get the installation folder from another PC.
Before installing Wine, it's better to add it's repository:
For Karmic Koala users:
sudo add-apt-repository ppa:ubuntu-wine/ppa
For Jaunty,Intrepid,Hardy users:
sudo sh -c "echo 'deb http://wine.budgetdedicated.com/apt jaunty main' >> /etc/apt/sources.list";
sudo sh -c "echo 'deb http://wine.budgetdedicated.com/apt intrepid main' >> /etc/apt/sources.list";
sudo sh -c "echo 'deb http://wine.budgetdedicated.com/apt hardy main' >> /etc/apt/sources.list";
Then, download and install the Windows version of Picasa from Picasa's homepage
Add the Picasa's repository to Ubuntu:
sudo sh -c "echo 'deb http://dl.google.com/linux/deb/ testing non-free' >> /etc/apt/sources.list";
and install it with
sudo apt-get install picasa
Copy the installed Picasa
from(or from where you've installed Picasa)
You'll have to run the file manager as Super User, so you can open it by typing in the terminal