Deleting a program and it's configuration

if you use:

sudo apt-get --purge remove packagename

it will remove the config in the system files but you will need to manually delete the settings in $HOME which is where each apps config is stored per user. If you run:

cd ~; ls -a

You will see some of the config files. If you also run:

cd ~/.config; ls -a

You will see some more

If you remove those folders and rerun the app, you will get vanilla settings.

Thanks, that worked. Took me a while to find the k9copy folder.

Sorry, but it isn't solved yet.
It worked with K9Copy, but it doesn't work with Wicd. No matter how many times I --purge remove, delete the .wicd directory, and reinstall, it always remembers my settings.

hmm

are there any folders in ~/.config for it?

No, this are the files in .config:

. brasero emesene1.0 geany gtk-2.0 softwarecenter Trolltech.conf
.. compiz Empathy gnome-disk-utility indicators tomboy user-dirs.dirs
arora-browser.org deluge enchant gnome-session menus totem user-dirs.locale
autostart desktop-couch f-spot google-chrome smplayer transmission vlc

ok, uninstall wicd and remove the config folder in $HOME then run:

sudo find / -name "wicd*"

see what it finds. Lets go all out on this mutha

It found all this:

alfonso@alfonso-desktop:~$ sudo find / -name "wicd*"
/home/alfonso/.local/share/Trash/info/wicd-tray.desktop.trashinfo
/home/alfonso/.local/share/Trash/files/wicd-tray.desktop
/home/alfonso/.config/autostart/wicd-tray.desktop
/etc/xdg/autostart/wicd-tray.desktop
/etc/default/wicd
/etc/init.d/wicd
/etc/dbus-1/system.d/wicd.conf
/etc/wicd
/var/run/wicd
/var/log/wicd
/var/log/wicd/wicd.log.1
/var/log/wicd/wicd.log
/var/log/wicd/wicd.log.3
/var/log/wicd/wicd.log.2
/var/lib/update-rc.d/wicd
/var/lib/dpkg/info/wicd-daemon.list
/var/lib/dpkg/info/wicd-gtk.list
/var/lib/dpkg/info/wicd-gtk.postrm
/var/lib/dpkg/info/wicd-daemon.postrm
/var/lib/wicd
/var/cache/apt/archives/wicd_1.7.0+ds1-2_all.deb
/var/cache/apt/archives/wicd-daemon_1.7.0+ds1-2_all.deb
/var/cache/apt/archives/wicd-gtk_1.7.0+ds1-2_all.deb
/usr/share/app-install/desktop/wicd.desktop
/usr/share/app-install/icons/wicd-gtk.png

/etc/dbus-1/system.d/wicd.conf
/etc/wicd

look highly suspect, open them with a text editor, do they hold your settings?

There were files with the program's settings on /etc/wicd
I removed the /etc/wicd directory and installed wicd again, but now it doesn't open. I tried reinstalling again and it doesn't work, I don't know what happened.

After removing and reinstalling about 10 times Wicd is working again and with default settings, so my problem is solved.
I still have wi-fi problems, so I'll make another question.