Comment 4 for bug 618907

OK, now after the mutter and clutter updates (see below) the gnome-sell works again with no errors.

- gir1.0-clutter-1.0_1.2.12-0ubuntu5
- libglutter-1.0_1.2.12-0ubuntu5
- gir1.0-mutter-2.31_2.31.5-0ubuntu3.1
- libmutter-private0_2.31.5-0ubuntu3.1
- mutter_2.31.5-0ubuntu3.1
- mutter-common_2.31.5-0ubuntu3.1

The top left and bottom right hot-spots also work.

This bug seems to fixed now.
But the bug #576991 remains though (the workaround above #1).