I have the same experience as CYMC, those clear adhesive strips doesn't work as well as those foam adhesive.  I was pretty impressed with the command clips before, but the newer version doesn't last long.  I will kept replacing the strips almost every month or 3 weeks.  I end up buying those "bigger" foam adhesive and cut it smaller pieces and so far it stays up there on the wall.  Perhaps this plastic strips doesn't work well on painted wall, maybe they are just designed to work on glass or marble?