screen focus incorrect when switching windows

[Daryl Lublink]

Binary package hint: metacity

I am running dual head 1680x1050 on each of the two screens.

xrandr --addmode VGA-1 1680x1050
xrandr --output VGA-0 --mode 1680x1050
xrandr --output VGA-1 --mode 1680x1050
xrandr --output VGA-1 --left-of VGA-0

Steps to reproduce bug :
1. Open two windows
2. Position one window to the left screen
3. Position second window to the right screen
4. Windows should be unmaximized
5. Maximize the window on the right screen ( double click on blue bar )
6. Unmaximize the window on the right screen ( double click )
7. Drag window on left screen ( click and hold left button once on blue bar )

What should happen :
The window on the left screen should move around

What actually happens :
The cursor moves the window on the right screen, so the window moves around without the cursor being anywhere near it.

I can consistently reproduce this bug, I have had this bug since I first install Alpha 2 Lucid. I have fresh installed the Stable release that came out on April 29th. The bug is still present.

Notes :

1. I am using the Clearlooks theme ( blue/gray + control buttons to the top right of window )
2. Visual effects were turned off using "Appearance Preferences" => "Visual Effects" => "None"
3. This sometimes happens on my laptop which has a single screen 1024x768, I will try and provide steps to reproduce on single screen as soon as I can
4. The ATI dual head card does not seem to recognize my card can do dual 1680x1050, so I have used this command "xrandr --addmode VGA-1 1680x1050". As long as I don't play video on the right side of the right screen, it works well. I don't play games , so I do not know if 3D works.

Extra information as requested by Launchpad :
Description: Ubuntu 10.04 LTS
Release: 10.04

david@david-desktop:~$ apt-cache policy metacity
metacity:
  Installed: 1:2.30.1-0ubuntu1
  Candidate: 1:2.30.1-0ubuntu1
  Version table:
 *** 1:2.30.1-0ubuntu1 0
        500 http://ca.archive.ubuntu.com/ubuntu/ lucid/main Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: metacity 1:2.30.1-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.32-21.32-generic-pae 2.6.32.11+drm33.2
Uname: Linux 2.6.32-21-generic-pae i686
Architecture: i386
Date: Tue May 4 16:06:09 2010
EcryptfsInUse: Yes
ExecutablePath: /usr/bin/metacity
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
ProcEnviron:
 LANG=en_CA.utf8
 SHELL=/bin/bash
SourcePackage: metacity

[Daryl Lublink (dlublink)]

I tested this with both windows on the same screen ( same procedure as above, but replace "left screen" with "left side of screen" ) and it does the same behaviour