> With this, start Emacs, open a file, foo.tex say, and in the
 > mini-buffer of the frame displaying foo.tex do occur->some text, so
 > that the occur-buffer displays in its own frame. Now, in the
 > mini-buffer of the frame with foo.tex do bury-buffer. Then also this
 > frame displays the occur-buffer, so that I end up with two frames
 > displaying the same occur-buffer.  How to solve this problem?

You can't and I am to blame for that.  'switch-to-visible-buffer' is
simply too weak to handle your case.  Please apply the attached patch
and set 'switch-to-buffer-skip-visible' to 'visible or t.

Eli this was a regression in Emacs 24 that went unnoticed so far.  Any
objections to install?

martin