package libgl1-mesa-glx 7.10.2-0ubuntu2.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2

[Gene J]

After doing an update, the bug notice came up.

ProblemType: Package
DistroRelease: Ubuntu 11.04
Package: libgl1-mesa-glx 7.10.2-0ubuntu2.1
ProcVersionSignature: Ubuntu 3.0.0-7.8-generic 3.0.0
Uname: Linux 3.0.0-7-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Wed Nov 9 22:42:44 2011
DistUpgraded: Fresh install
DistroCodename: natty
DistroVariant: ubuntu
ErrorMessage: subprocess installed post-installation script returned error exit status 2
InstallationMedia: Onyx64 - Release amd64
SourcePackage: mesa
Title: package libgl1-mesa-glx 7.10.2-0ubuntu2.1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2
UpgradeStatus: No upgrade log present (probably fresh install)
version.compiz: compiz 1:0.9.4+bzr20110606-0ubuntu1~natty2
version.ia32-libs: ia32-libs 20090808ubuntu13
version.libdrm2: libdrm2 2.4.23-1ubuntu6
version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.2-0ubuntu2.1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu2.1
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3.1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4.1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu7.2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu7

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Bryce Harrington (bryce)]

4 bugs reported with this error, all with proprietary drivers.
Guessing the alternatives didn't update properly for some reason?