Fixing some annoying GTK Warnings

So, new Buguntu upgrade, new problems. The usual deal. I don't like Unity so I installed the usual gnome desktop. Now when I start gVim I get a bunch of errors like this:

(gvim:7189): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap"

OK, not errors, just warnings. I don't like them anyway, so I did this to fix it:

sudo apt-get install gtk2-engines-pixbuf

Now it works. One problem less, NaN to go... time to move back to Debian?