Selecting images inside PICTURES folder

Before the upgrade to my MBP, In OSX 10.6.8, when I chose PICTURES folder for the screen saver it showed every image even inside sub folders inside the PICTURES folder...

But now, in OSX 10.8.2, it just shows images at the level of the PICTURES Folder, nothing from inside a sub folder... i

is it a way to make it show every picture inside, even if they are inside a folder that is in another folder? (ex, when picts are organized by yer and month folders).

tks