OK, I'm starting to regret this upgrade and for numerous really small issues that should not be an issue -- This one - images in finder are not showing in preview. Actually, more than images, PDF previews, etc are not showing. Or if they do show, it takes a while. Or the first one on the list in a folder will display, but then none of the others down the list display. It makes no sense. It's annoying. And often I can log on and back in and it will work, sort of. Overall, it doesn't, but I cannot articulate exactly what cases it can or cannot. Anyone else with this? It's maddening.