I upgraded to v. 4 as soon as I heard about it. I should have waited at least a year. The best thing about v.4 is that it doesn't cripple v.3. L4 is not for the working man. Simple things are difficult. It is not intuitive. It is a resource hog. I actually have it running on a laptop that I don't need just so that it can index and update to its heart's content and not impede the rest of my computer life. Postponing four hours is no help when the workday is longer than four hours. The size of the automatic updates proves that it was not ready to go gold. I can't blame the company for wanting a slick looking product, that is what will sell. However, it comes up short in so many ways that were well covered in v.3.