Hello,
Seems like trying out the API I have a problem with
UsersManager.getSitesAccessFromUser&userLogin=loginname&format=xml
It give me an error, while reading the XML feed.
I think the problem is due to that the nodes are numbered, like
<14>View</14>
<15>View</15>
…
…
Seems like it is not valid due to that.
Names cannot start with a number or punctuation character
I just created http://dev.piwik.org/trac/ticket/923