iPhoto '11 OSX 10.8.5 I'm scrolling through my iPhoto library of about 100,000 photos and all of a sudden it has been doing crazy things. Images change into other images. That is they are being replaced, doubled up. I have noticed it for about a week now but I have just realised I am losing those photos. They are changing into other photos! Every time I scroll through it happens and now I have 4 or 5 or the same photo and I have lost the photo it seems to replace (I actually witness it change into another photo) and I am worried I have lost it for good! Any ideas? please help!