Bug#403890: installation successfull with some manual work

["peter green" <plugwash@P10Link.net>]

> 
> This was possible in export installs and this is still possible in
> expert installs. The behaviour has not changed with regard to that matter.
> 
i'm pretty sure i've never intentionally booted d-i in expert mode, and when i did a sarge install i'm pretty sure i managed to skip creating a normal user account (i think it prompted me for one and i selected some kind of cancel option), unfortuntely i don't have any spare systems to test this on now.

also is there any way to switch to expert mode mid install and if not why?