Is it just me, or has the latest version got a bug? When exporting from the library, it sometimes happens that a photo doesn't export. If I remember this correctly, in previous versions, iPhoto just told you at the end which photos it could not export. Now, it just hangs - for hours and hours and hours; and it doesn't even tell you which photo it was that caused the problem.
Gives a really great feeling when you get up in the morning thinking it has exported all the photos - and find it must have got stuck a few minutes after you left the machine to get on with it.