I've tried everything to install firestarter 1.0.
I get an error code (1) at the end of the aborted installation.

root@9[justin]# apt-get install firestarter
Reading Package Lists... Done
Building Dependency Tree... Done
The following NEW packages will be installed:
firestarter
0 upgraded, 1 newly installed, 0 to remove and 3 not upgraded.
Need to get 0B/512kB of archives.
After unpacking 1946kB of additional disk space will be used.
(Reading database ... 80276 files and directories currently installed.)
Unpacking firestarter (from .../firestarter_1.0.0-2_i386.deb) ...

WARNING : Actual firestarter configuration files (/etc/firestarter/*) are
not compatible with the version you want to install. If you want to
continue installation, old configuration files will be saved in the directory
/etc/firestarter.old. After installation, you will have to run firestarter to
reconfigure your firewall.
Do you want to continue installation ? (enter YES to continue)
y
Aborting firestarter upgrade.
dpkg: error processing /var/cache/apt/archives/firestarter_1.0.0-2_i386.deb (--unpack):
subprocess pre-installation script returned error exit status 1
Errors were encountered while processing:
/var/cache/apt/archives/firestarter_1.0.0-2_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

Anybody know how to fix this error???
Thanks.

I deleted the /etc/firestarter directory and..

apt-get install firestarter

and it works :-) ;-)