iphoto problem on external drive
I too am having this issue. I have 11,503 photo's. When the iPhoto library is stored on the laptop internal drive it works fine, Lion or Slow Leopard. When I copy the library to a 64GB flash Drive OR to a 1TB Passport Essential SE the problem begins. DESCRIPTION: In the event view less than half of the event icons show an image, they are gray. When I mouse over them, they show a quick view of all the photos that they contain, as normal. When I scroll up and down, whole rows of the icons will briefly flash the expected picture on their icons and then go back to being gray. FURTHER: the icons don't "trade around", if an icon displays a thumbnail photo in the beginning, it always will. If it is gray in the beginning, it remains so. WHEN I DOUBLE CLICK on an event, ANY EVENT = GRAY OR IMAGE it works as I expect (Normal).
Be good to get an answer...