I can't view any picture from a Picasa web album. I tried with my album, other public albums. When I click on a thumbnail, a 500 error, pops in.

No comma should ever come between the subject and predicate.

Picasa Web albums work fine for me... I just tested this for example:
http://picasaweb.google.com/philipp.lenssen

Working fine from France!

At first when I saw the thread's title I thought Google increased the storage to 500 MB ;-p

Works fine in Belgium too....