[OS X Emacs] Aquamacs 1.9 intermittent problems with command-C

[Tom Van Vleck]

With Aquamacs Emacs 1.9 I am still noticing intermittent problems with
highlighting text and doing Command-C to copy it.

Just happened several times.
I am in shell-script[sh] mode.
I dragged across three lines and they highlighted.
I did Cmd-C to copy, Cmd-v to paste
(which should have pasted what I just copied, leaving no effect,
intending to next do a second Cmd-v to make a new subroutine)
what was pasted was the previous contents of the kill-ring.

This is the same problem I saw in Aquamacs Emacs 1.8.
David Reitter kindly provided a fix, for Preferences.el, on 20 July.
It redefined clipboard-kill-ring-save. That fix seemed to cure the  
problem.

When I installed Aquamacs 1.9, I removed the fix from my Preferences.el
since aquamacs-version-id is now 190.  Using describe-function, I
viewed the definition of clipboard-kill-ring-save in
Aquamacs 1.9, and it is exactly the same as sent in David's mail.
But the undesired behavior has returned.