Install appeared to be ~80% complete. If I remember correctly, this happended with the 11.10 alpha on this laptop also.

[Darin Miller]

Problem was not present with 11.10 final release. Unfornutealy I don't have any more details.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: ubiquity 2.9.5
ProcVersionSignature: Ubuntu 3.2.0-2.5-generic 3.2.0-rc3
Uname: Linux 3.2.0-2-generic x86_64
ApportVersion: 1.90-0ubuntu1
Architecture: amd64
CasperVersion: 1.292
Date: Fri Dec 2 21:27:09 2011
LiveMediaBuild: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20111129.1)
ProcEnviron:
 LANGUAGE=
 PATH=(custom, no user)
 LANG=en_US.UTF-8
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Darin Miller (darinmiller)]

I just remembered, the same fixed for 12.04 alpha was the same as the 11.10 alpha: uncheck the 3rd party software and install updates check boxes. The installs completes with no issues.

[Ubuntu Foundations Team Bug Bot (crichton)]

Exception during installation:
Dec 3 04:27:00 ubuntu ubiquity: Error in function:
Dec 3 04:27:00 ubuntu plugininstall.py: SystemError: E:Sub-process /usr/bin/dpkg returned an error code (1)
Dec 3 04:27:00 ubuntu plugininstall.py: