This has already been added to the wiki, under Wishes/Requests for BT3 final. Experiencing the same issue, only when the battery cuts out, and after I recharge/reboot, all my customizations (the look of the environment, that is) to BT3b persistent changes are gone. Icons in the menus, and removable device icons revert back to what looks like a former version of KDE. Yo no se, compadre.
Apologies for replying to a thread posted in the wrong area.