Postgresql fails to install on Breezy!

[David Walker]

The following NEW packages will be installed:
  postgresql
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
2 not fully installed or removed.
Need to get 0B/3795kB of archives.
After unpacking 9810kB of additional disk space will be used.
Preconfiguring packages ...
(Reading database ... 45320 files and directories currently installed.)
Unpacking postgresql (from .../postgresql_7.4.7-6sarge1_i386.deb) ...
syntax error at /usr/sbin/addgroup line 570, near "){"
syntax error at /usr/sbin/addgroup line 583, near "}"
Execution of /usr/sbin/addgroup aborted due to compilation errors.
dpkg: error processing 
/var/cache/apt/archives/postgresql_7.4.7-6sarge1_i386.deb (--unpack):
 subprocess pre-installation script returned error exit status 9
Errors were encountered while processing:
 /var/cache/apt/archives/postgresql_7.4.7-6sarge1_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)


That's probably not a good thing.
--
dave