Comment 6 for bug 378955

I did some texting in VirtualBox running with virtualization under Ubuntu on a Core 2 Duo machine.

Using these installation settings (the one I used before) I got the same error as before:
Keyboard layout: Swedish
Location: Europe, Sweden
Automatic partitioning on the only harddisk
root passwd: passwd123
username: ahlberg
passwd: passwd123
Host name: ahlberg
Domain name: csbnet.se
Network: DHCP and IPv6 enabled

Booting 64-bit system
Login: ahlberg
$ su
# apt-get update
# apt-get install postfix
Configuration: Internet site
System mail name: ahlberg.csbnet.se

The error was the same as before (group postdrop has same group ID as nobody)

Trying the default installation settings:
Keyboard layout: US-English
Location: Pacific, United States, Pacific Time
Automatic partitioning on the only harddisk
root passwd: passwd123
username: john
passwd: passwd123
Host name: myhost
Domain name: mydomain
Network: DHCP enabled

Booting 64-bit system
Login: john
$ su
# apt-get update
# apt-get install postfix
Configuration: Internet site
System mail name: myhost

I now got this error message:
Running newaliases
postfixalias: fatal: dict_mkmap_func: unsupported dictionary type: hash: Is the postfix-hash package installed?
May 23 15:38:28 myhost postfix/postalias[862]: fatal: dict_mkmap_func: unsupported dictionary type: hash: Is the postfix-hash package installed?
dpkg: error processing postfix (--configure): subprocess post-installation script returned error exit status 1
Errors were encounered while processing: postfix
E: Sub-process /usr/bin/dpkg returned an error code (1)

Disabling virtualization (and thus booting the 32-bit system) i get these errors:

For my settings (<email address hidden>):
# apt-get install postfix
Reading package list... Done
Building demendency tree...Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
  debootstrap: Depends: wget but it is not going to be installed
  devscripts: Depends: wget but it is not going to be installed or
              Depends: curl but it is not going to be installed
  dput: Depends: python (>= 2.3) but it is not going to be installed
  postfix: Depends: ssl-cert but it is not going to be installed
  python-minimal: Depends: python2.5-minimal (>= 2.5.2) but it is not going to be installed
  vim: Depends: python2.5 (>= 2.5) but it is not going to be installed
E: unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).

For default settings (john$myhost.mydomain):
# apt-get install postfix
Reading package list... Done
Building demendency tree...Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
  manpages: Depends: man-db but it is not going to be installed
  postfix: Depends: ssl-cert but it is not going to be installed
  tasksel-data: Depends: tasksel but it is not going to be installed
E: unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).

Could you try to reproduce this?