debian:/home/danny# apt-get install ipw3945d
Reading package lists... Done
Building dependency tree... Done
ipw3945d is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
1 not fully installed or removed.
Need to get 0B of archives.
After unpacking 0B of additional disk space will be used.
Setting up ipw3945d (1.7.22-4) ...
chown: `Debian-ipw3945d:Debian-ipw3945d': invalid group
dpkg: error processing ipw3945d (--configure):
subprocess post-installation script returned error exit status 1
Errors were encountered while processing:
ipw3945d
E: Sub-process /usr/bin/dpkg returned an error code (1)