The problem is that you are trying to create a user called 'shadow'. 'shadow' is a reserved username, the installer cannot create it and crashes. You can work around this by choosing a different username. This is a duplicate of bug 47861, which has now been fixed on Edgy. Thanks for your report.
The problem is that you are trying to create a user called 'shadow'. 'shadow' is a reserved username, the installer cannot create it and crashes. You can work around this by choosing a different username. This is a duplicate of bug 47861, which has now been fixed on Edgy. Thanks for your report.