Hope you have installed rootsh app from the repository Steps. [Ignore the (") while typing] 1. Download the Lockslider.png file to Nokia N900 directory only and rename it to lockslider.png 2. Open terminal 3. Type " Sudo gainroot" 4. Type "cd MyDocs" 5. Type "cp lockslider.png /usr/share/themes/alpha/backgrounds/" That is it. It will now work as it use to work