Were there any speed related changes from version 4 to version 5? I'm asking because after upgrading to 5, the responsiveness and speed of my N900 increased greatly (4 was kind of laggy, but I'm not sure if this was related to the version or the various customizations of my N900).
In "one" word, I'm so much satisfied with the speed of version 5 that I'm even reluctant to move to 6 right now.