Comment 11 for bug 506584

yep, i can't access bug #527767 either

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You are logged in as Γουργιώτης Γιώργος (aka Gourgi). "

Maybe bug #527767 is private ?

Anyway, this bug is solved for me now. I don't get an OOPS-ID when accessing concacts from the web UI anymore.
I realised that my problem was some contacts that i copied from my gmail addressbook. So the fix was "easy" :

1) I exported my evolution's UbuntuOne addressbook into .vcard through evolution
2) Then i edited the .vcard with gedit and deleted the gmail contacts.
3) Then I opened desktop-couch's web interface "Futon" and completely deleted my contacts database :
xdg-open ~/.local/share/desktop-couch/couchdb.html
(see desktop couch documentation http://www.freedesktop.org/wiki/Specifications/desktopcouch/Documentation/ViewingMyData).
4) Last step was to re-import the .vcard addressbook in evolution and wait until it synced with U1 servers.

I hope this helps you a bit.