There is a nice Workaround for this issue.
I Have Included Three Files In The .ZIP:
README.txt
DISABLE_My_Pictures_In_Wallpaper_List.reg
ENABLE_My_Pictures_In_Wallpaper_List.reg
== MIRRORS ==
RapidShare
Easy-Share
MegaUpload
MediaFire
FileFactory
1FileSharing
FileDropper
FilesHost
YouShare