On 29 July 2013 16:46, BE Arnold <bearnold at outlook.com> wrote: They were certainly easy to clean underneath the keys if I recall correctly (turn the machine upside down and shake gently and listen to the pitter patter of falling keys :) Of course since the original 520ST combined the mushy keyboard with a relatively non rigid case and poorly socketed chips typing vigorously could reset or hang the machine... Can I put a vote in for whatever Windows mobile XDA disaster O2 were selling a few years back... which did not support chorded keys? (You want shift and a key? please press and release shift... *then* press the key). Type a message fast enough and the initial character will appear several characters later. Oh the joy...