I have iPhoto "09 and over 2,000 photos. My iMac has OS 10.8.2. Going back to my iPhoto library, I discover MANY photos--that were sharp before--are now fuzzy and many others show nothing but an ! (exclamation point!!). No people or other scene. The photos are shown fine in the small photos but when I click enlarge that's when the fuzzy or ! appear.
Odd that photos next to each other can have one fuzzy and the next clear.
Suggestions, please!
Thanks.

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