display bug

[Bruce Ingalls]

I noticed an interesting bug.
When I started emacs& from my xterm, then dragged the xterm window out 
of the way,
during the time that emacs was taking a long time to launch, the emacs 
display was being
written to both windows.
When I clicked on the title bar of the xterm, then both the emacs 
window, where it overlapped
the previous xterm position, and the current xterm position, both showed 
the xterm display.

Finally, I dragged the current emacs displaying xterm back, to align 
with its overlapping xterm
display, and X Window went back in synch.

I am running a default configuration of the latest stable version of 
cygwin-xfree (v4.3?) on
XP home. This is a rootless system.

I'm not sure how easy it will be to reproduce the problem, as the timing 
of moving the parent
xterm seems important.