Currently Being ModeratedDec 25, 2011 9:35 AM (in response to Yyaannii245)
having the same issue, and it did appear this morning trying to change my wallpaper. so i did delete that desktop and created a new one.. and the system preferences started to work properly.
Currently Being ModeratedDec 25, 2011 9:48 AM (in response to Yyaannii245)
Quit System Preferences (force quit if necessary.)
In the Finder, hold down the option key and select Go > Library from the menu bar. From the Library folder, delete the following item:
Relaunch System Preferences while holding down the shift key.