There are thousands of changes per week on TW.read: not if you do not "dup". and it hurts nothing by not duping. you are able to dup when *you* choose to. and to reboot when you see fit. you are not driven by the availability of newer packages. it is a choice. there can be millions of changes but they do not affect you unless you make that choice. there is a newer model of the car I drive but I have not purchased it and may never, but it exists.