The latest version on iPhoto(9.3) on the Mac store is not compatible with Snow Leopard. You did not make a mention of what OSX you ran, but I just want that little fact thrown out there. I bought iPhoto when Lion was not a requirement, but now I'm in line for the upgrade(running 9.2.3) and I'm blocked by the OS from getting it.
The other ridiculous thing is that I can't cancel the notification in the Mac Store app because there is no mechanism to cancel it. I'm stuck with the Mac Store app in my dock showing 1 update ready. I hope, since Apple is almost exclusively going to the Mac App store, they will figure out how to allow consumer's to cancel notifications that don't apply to them/that particular machine. I'm sure I'm not the only person in Apple's universe to be splitting apps among 2 different operating systems.
I'm stuck with the Mac Store app in my dock showing 1 update ready. I hope, since Apple is almost exclusively going to the Mac App store, they will figure out how to allow consumer's to cancel notifications that don't apply to them/that particular machine.
I love iPhoto. The only complaint is that it has become a little laggy with my large photo library on my C2D machine. Hopefully my new retina MBP solves that issue!