Dear Maintainer,
When one install gwenview under debian wheezy that the Mate desktop
environment had been previously added to, the gwenview package replaces
the default "Menu > Places > Home & Desktop" handler events by its own ones.

After gwenview install:
Clicking on "Menu > Places > Home" launch gwenview into home directory.
Clicking on "Menu > Places > Desktop" launch gwenview into desktop
directory.

Menu > Places > Computer, network and following are not affected.

After a simple uninstall of the gwenview package, default Mate menu
behaviour comes back:
Clicking on "Menu > Places > Home" launch caja into home directory.
Clicking on "Menu > Places > Desktop" launch caja into desktop directory.

Note as my /var/log/apt/history.log report,
  Start-Date: 2013-09-21  15:46:18
  Commandline: apt-get -y purge gwenview
  Purge: gwenview:i386 (4.8.4-2)
  End-Date: 2013-09-21  15:46:28,
that when I uninstall gwenview, there where no dependency uninstalled
because of other installed KDE package needs. But this simple package
uninstall is enough to remove the (menu hack) bug.

I have no Idea of Menu > Places configuration settings in Gnome/Mate1.6.
Nothing found in `gsettings list-recursively | grep -iE places`
I suppose that bug is a spacename conflict between Mate1.6
implementation and a gwenview4.8 unfortunate coding choice.

For additionnal informations, I diplay below the full installed package
list that had been triggered into apt-get process by the meta-package
"mate-desktop-environment-extra"

Please transfer that bug report to relevant coding team.
Regards,
Médéric Claassen.