forget password after reboot for every acccount

i rebootet after a system update and got this dialog.

that should never happen if i had saved the password once into the system-keychain.

i rebootet the system again and got this dialog again!

Launchpad Details: [#LP1473081](https://bugs.launchpad.net/bugs/1473081) davidak - 2015-07-09 13:46:17 +0000

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