This is a Xubuntu-specific bug that happened due to a patch we carry in the distro (which informs accountsservice of the current wallpaper so that the greeter has the correct background image).
Also, it has been fixed in Xubuntu meanwhile (https://bugs.launchpad.net/ubuntu/+source/xfdesktop4/+bug/1318307)
This is a Xubuntu-specific bug that happened due to a patch we carry in the distro (which informs accountsservice of the current wallpaper so that the greeter has the correct background image). /bugs.launchpad .net/ubuntu/ +source/ xfdesktop4/ +bug/1318307)
Also, it has been fixed in Xubuntu meanwhile (https:/