Strange problem: when I import photos from my iPhone 4S (5.0.1) into iPhoto 11 (latest), MOST of the images show as all black. Strangely, almost all landscape photos are imported/displayed ok, however every portrait shot shows as black.
If I reveal in finder, the modified files that iPhoto creates are 162kb black jpgs, however the original files are the correct photos.
I've rebuilt my iPhoto '11 library, to no avail. After reimporting, portrait images are still black. For some reason, iPhoto is changing/corrupting the 'modified' versions of the photos upon import.
Thinking this is a bug either in iPhoto or relating to the iPhone 4S (this never happened with the 4...)
FWIW It's being discussed in the Apple Support forums here.
I also tried importing the photos via Image Capture then into iPhoto, and same result. So it's an issue with how iPhoto processes (modifies) the photos into it's library.
I believe this issue only seems to affect iOS5 users...