See the post under More Like This named iPhoto jumps to last import...: Apple Support Communities. It includes a solution for one user.
I have iphoto '11, but still don't have the auto import folder in package contents. However, I searched spotlight for it, found it, deleted the contents and problem solved.
Nope it's a bug
A super annoying one. It does this on my Macbook and my iMac
Where did you look for the Auto Import folder? In the iPhoto application or the iPhoto Library? There is one in every iPhoto Library.
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