I’m constantly astonished at how slow Facebook’s Android app is. If it can’t load my news feed while *waiting for an elevator*, something’s wrong with it. (And that’s when GPS is off. If GPS is on, it sits even longer trying to figure out where I am, even though it doesn’t actually need the location info.)
Google+ and UberSocial (a third-party Twitter app) are both a lot faster to load content, AND they can both sync in the background, so there’s at least something for me to read more or less instantly. Facebook does have a “refresh interval,” but as near as I can tell it doesn’t do anything, or maybe it’s the interval for checking notifications.
/rant