Comment 4 for bug 683605

This seems to be a result of the kernel commit below:

  commit 3624eb04c24861ab296842414f9752a393e68372
  Author: Rafael J. Wysocki <email address hidden>
  Date: Mon Oct 4 22:08:12 2010 +0200

    PM / Hibernate: Modify signature used to mark swap

    Since we are adding compression to the kernel's hibernate code,
    change signature used by it to mark swap spaces, so that earlier
    kernels don't attempt to restore compressed images they cannot
    handle.

    Signed-off-by: Rafael J. Wysocki <email address hidden>
    Acked-by: Pavel Machek <email address hidden>