I recently bought a new macbook pro (my first mac) and love it. However, after importing about 4700 photos into iphoto, no faces were detected. I tried going into the iphoto package/folder and deleting the files that included the name face in them, which forced iphoto to rescan all the photos again for faces. However, the second time no faces were detected again. Not sure what the problem is. I have searched around here and on google and no one else seems to be having this problem. Does anyone have any suggestions on how to fix this?