Possible Duplicate:
Desktop forgets theme?
Suddenly after restart my default theme turned into a theme like this,
Every time i change the theme it gets changed into a custom theme like this
Can somebody tell me how can i find the cause of this problem
Thanks
A short sleep in /etc/xdg/autostart/gnome-settings-daemon fixes it:
Exec= bash -c "sleep 2; /usr/lib/gnome-settings-daemon/gnome-settings-daemon"
Also see: Bug #574266