Comment 9 for bug 47919

I found the problem. The k/ubuntu kdepim source package applies the patch named kubuntu_09_kmail_addressbook.diff. This was necessary in kdepim-3.5.1 per this bug http://bugs.kde.org/121337 because kmail wasn't displaying address book entries. This was fixed in 3.5.2 and now the patch causes each addressbook to show up twice. I have verified that if you remove the patch, rebuild kdepim and then install the newly built version of kmail, the address book in kmail works as expected. This is an ubuntu specific problem and is not caused by upstream.