This was being caused by a Yahoo account on my machine. Removing the account and re-adding it fixed the problem.
The following fix worked for me: Symptoms of a faulty Yahoo account in Online Accounts manifest as the following: When you go to System Settings > Online Accounts, click on your Yahoo Account in left column, then click on "Edit Options", there will be NO information displayed - window will be blank instead of the expected username & password fields. To fix a faulty Yahoo account in Online Accounts you need to delete the account and re-add it: Go to System Settings > Online Accounts, click your Yahoo Account in left column, click "Remove Account", then click "+ Add account..." The username & password fields will display as expected and you can fill out your account info. Congratulations, the "Enter your credentials" popup is now gone when you reboot. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to signon-ui in Ubuntu. https://bugs.launchpad.net/bugs/1313466 Title: signon-ui continually pops up "Enter your credentials" after upgrade to 14.04 Trusty Tahr Status in “signon-ui” package in Ubuntu: Confirmed Bug description: After upgrading from 13.10 to 14.04, the "Enter you credentials" dialog pops up every hour once for every item in the Online Accounts, screenshot attached. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: signon-ui 0.16+14.04.20140304.is.0.15+14.04.20140313-0ubuntu1 ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9 Uname: Linux 3.13.0-24-generic i686 ApportVersion: 2.14.1-0ubuntu3 Architecture: i386 CurrentDesktop: Unity Date: Sun Apr 27 18:43:48 2014 InstallationDate: Installed on 2011-03-01 (1153 days ago) InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007) SourcePackage: signon-ui UpgradeStatus: Upgraded to trusty on 2014-04-18 (9 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/signon-ui/+bug/1313466/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

