Comment 10 for bug 666404

The wiki solution (jsribeiro wrote on 2010-11-03) worked for me (in deleting remote db and empty contacts), with some extra ugly-work.

* Beware - you may not want to do that. That seemed to be necessary for me and I didn't care about data that would be lost. *

The page to be opened in the browser didn't redirect to a valid page (the destination page/service was unavailable, no server response). So I reinstalled all couchdb related packets and evolution-couchdb, and libsync[xxx] ones etc etc. Than I deleted the entire directories ubuntu one and .local/share/desktop-couch and anything I could find related to couchdb in my home folder. Than I rebooted the system (I also has a Ubuntu One waring for no space left), opened the page that the wiki indicates, and now redirect was correct (and there were no more contacts, notes and bookmarks db, of course). So I ran the python script to delete the remote contact db. Opening my browser to ubuntuone resulted in 0 contacts: done! At this point I opened Ubuntu One preferences, and logged on my old Ubuntu One account as if it was the first time on that machine.
Now Evolution-Ubuntu One address book is empty.
Now let's try to get sync working (service is not unavailable).