Alternate installer write network interface config, locked network-manager

[alicatux]

I had a clean-install Ubuntu 11.10, and very nicely, it have wpa support so that I can download those missing/broken(on CD) driver package. It finished install without trouble.

reproduce:
* install 11.10 with alternate CD
* setup WPA network connection on installation
* finish install and reboot

expected to happen:
* network-manger works
* I need to setup my wireless connection on network-manger again

happened instead:
* a very slow boot while waiting network to be ready
* had to remove wlan0 from /etc/networks/interface
* network-manger locked up
* restart network-manger

suggestion:
* stop writing network config on installation to target system
* modify network-manger so it can detect existing config upon installation and save it

[Mathieu Trudel-Lapierre (cyphermox)]

Confirmed, though I don't think that's a debian-installer bug; the problem is really that NM's ifblacklist_migrate.sh is broken and doesn't remove the offending configs.