I used a smart folder to have direct access to my photostream photos without having to open iPhoto. On my last MBP that worked fine, since i upgradet to a new MBP this doesn't work properly because finder wont "FIND" some pictures that are in my /Library/ApplicationSupport/iLifeAssetManagement/assets/sub, which is pretty wired, i even tried searching for the NAME of a File but Finder wont find it even if i see its there, what i found is that it might have something to do withe the MetaData (cmd+i) the "More information" field on some pictures is BLANK nothing in there, and if that's the case Finder wont recognize this picture as a "file".
in iphoto of course all photostream pictures are there, but if you select one and click "info" some have MetaData like "iPHone 4" and ISO and stuff, and some DONT.
and to top all that, some pictures that don't have MetaData when you look in Finder HAVE metadata in iPhoto.
i mean i feel like i am crazy or so this behavior is nuts.