I'm making an iMovie slideshow from my last vacation for my family. I am on the most up-to-date version in iMovie '11. Im having a problem with stills and their duration. Whenever I set a still for say 3.4s and I click set for all stills, some will be 3.4 seconds but some will be 2.4 or 1.8 and then when I click those and make it 3.4 it makes them like 4.4 or 5 seconds. I have to keep typing a different times until I find the one that is 3.4. Is this a bug or am I doing something totally wrong. I have a about 300 photos and I would say about half are doing this and it is a pain to go through each one.