You certainly tried the most obvious already?
You can rebuild the Desktop manually by holding down the Option and Command (Apple) keys while the computer starts up. Click OK when you see the message "Are you sure you want to rebuild the Desktop file on the disk "your disk"? Comments in info windows will be lost."
http://support.apple.com/kb/HT2344
You can rebuild the Desktop manually by holding down the Option and Command (Apple) keys while the computer starts up. Click OK when you see the message "Are you sure you want to rebuild the Desktop file on the disk "your disk"? Comments in info windows will be lost."
http://support.apple.com/kb/HT2344