Bug#517589: mouse can move into invisible areas

["W. Martin Borgert" <debacle@debian.org>]

Package: libxrandr2
Version: 2:1.2.3-1
Severity: normal

I'm using LVDS (1280×800) and VGA (1680×1050) side by side. The
virtual screen has 2960×1050, so there is an ununsed Bermuda
triangle of 1280×250 below the lower Gnome panel. It seems, that
the mouse can move into that area, which makes me nervous, as I
can't see what the mouse is doing there. Dating other mice?

-- System Information:
Debian Release: 5.0
  APT prefers stable
  APT policy: (990, 'stable'), (500, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)

Kernel: Linux 2.6.26-1-686 (SMP w/2 CPU cores)
Locale: LANG=en_DK.UTF-8, LC_CTYPE=en_DK.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages libxrandr2 depends on:
ii  libc6                         2.7-18     GNU C Library: Shared libraries
ii  libx11-6                      2:1.1.5-2  X11 client-side library
ii  libxext6                      2:1.0.4-1  X11 miscellaneous extension librar
ii  libxrender1                   1:0.9.4-2  X Rendering Extension client libra