I would suspect that what is happening is that the control
is losing focus after each key stroke, and then when focus
returns, the cursor is back at the start of the line, rather
than at the end.

It is not doing the same when you type slowly?

There is obviously an 'Autopost' on somewhere which is
causing the post action, and this is then confusing WINDOWS
in that it is not remembering where it was.

It sounds as if you need to rethink how the check for save
is made. I do it in the OnExit event of a control so it only
happens once.

--
Lester Caine
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L.S.Caine Electronic Services