Too much KDE-related problem for me lately................... :x
I experienced similar loss of KDE configuration a few days back. Lucky me, I've saved a backup copy of the kde config folder a.k.a. ~/.kde4. Firing up KDE 4.10 with that backup config folder restored all my kde-related setting , desktop widgets, wallpaper etc.
Everything worked fine until I experienced 2 hard crash leading to a reboot of the computer. After examining the /var/log/messages and some googling, I thought the culprit is probably the power devil(KDE power management daemon, what a name §e ). I disabled the power management daemon in the KDE system settings. Logging out and then logging in again, all my wallpaper, widgets and kde-related settings were lost again.
Once again after replacing the ~/.kde4 folder with my previous backup, all the settings, walllpaper, widgets returned. But whenever I tried to disable the power devil daemon in the system setting and then log out, all the configurations were lost.
I've tried to manually disable the daemon by altering the ~/.kde4/share/config/kdedrc file to look like this
Code:
....
[Module-powerdevil]
autoload=false
.....
After I saved the file and restart kde 4, all the configurations were lost again.
So..I was left with no choice but allowing the Power Devil to keep haunting me/my com.
If there were another hard crash , I think I must say goodbye to KDE x(