package linux-backports-modules-wireless-2.6.32-21-server (not installed) failed to install/upgrade: trying to overwrite '/lib/udev/compat_firmware.sh', which is also in package linux-backports-modules-wireless-2.6.32-21-generic 0:2.6.32-21.11

[Fernando Gozzi]

I was having problems with my wireless driver and went to synaptic in order to get other modules and try to fix it.
The error I am getting with my wireless is "device not ready" in the Network Manager Applet. If you could please help

ProblemType: Package
DistroRelease: Ubuntu 10.04
Package: linux-backports-modules-wireless-2.6.32-21-server (not installed)
ProcVersionSignature: Ubuntu 2.6.32-25.45-server 2.6.32.21+drm33.7
Uname: Linux 2.6.32-25-server x86_64
Architecture: amd64
Date: Fri Oct 22 02:46:00 2010
ErrorMessage: trying to overwrite '/lib/udev/compat_firmware.sh', which is also in package linux-backports-modules-wireless-2.6.32-21-generic 0:2.6.32-21.11
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
SourcePackage: linux-backports-modules-2.6.32
Title: package linux-backports-modules-wireless-2.6.32-21-server (not installed) failed to install/upgrade: trying to overwrite '/lib/udev/compat_firmware.sh', which is also in package linux-backports-modules-wireless-2.6.32-21-generic 0:2.6.32-21.11