[incubus]

I have the same issue with sources not being remembered after a reboot. Added five Samba Movie sources and none of them have been remembered.

EDIT_1: I believe the sources.xml file is set to root:root rather than xbian:xbian, this may be the issue.

EDIT_2: Just changed the owner of the sources.xml file to xbian:xbian and all is now well (after adding the sources again).

Terminal

ssh
sudo chown xbian:xbian .xbmc/userdata/sources.xml

Add sources as per usual XBMC method.