I've had my mbp for a few weeks now and love it. I am having a problem with faces in iphoto though. I transferred all my pics onto the mbp and they seem ok(I can view, modify and copy them fine) but when I tag people in faces they don't show up on the corkboard.

I have 10,000 pics, will it take a long time for faces to work? It still hasn't shown a single thing on the faces corkboard, just the welcome overview.

Any ideas?