Mavericks: Emacs and Terminal randomly scroll / jump around (unwanted scrolling)

Both terminal and emacs just randomly jump around from time to time, often by a full viewing page or more. I assume this has something to do with "responsive scrolling" and the other scrolling bugs (mostly involving sudden failure to scroll) reported for other apps, but I haven't found discussion of this random jumping around / random scrolling problem.
To give more details: I'm on a new 15" macbook pro running Mavericks 10.9.1 (behavior in 10.9.0 was the same). Terminal is Version 2.4 (326). Emacs is gnu emacs from http://emacsformacosx.com/, version 24.3 (9.0), but it had the same behavior with a much older (2008) version of carbon emacs. 
Anyone have any idea how to deal with this (other than "wait a year for Apple to fix things")?
Thanks.

No, this also happens for terminal, which is an Apple-supplied application (nothing to do with running emacs, I don't run emacs in the terminal).  Also, I did re-install emacs, as I mentioned I'm currently using the latest stable version, but the 2008 version I had been using previously had exactly the same behavior.

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