Yeah! It seems Ubuntu Linux is not the very customizable now days. :/
Originally Posted by cariboo907
Issue: after upgrade *-desktop packages may attract unwanted packages into your installation.
Example: Upgrade LUbuntu 12.04 installation to 12.10. Package lubuntu-desktop depends on NetworkManager. Network Manager was purged and replaced with Wicd before upgrade. After upgrade you'll have Wicd + NetworkManager installed again. It is not possible to remove NM ease due to dependency of lubuntu-desktop on it.
As workaround was used:
dpkg --purge --force-depends network-manager network-manager-gnome network-manager-pptp network-manager-pptp-gnome
This will bring up update-notifier in system tray with annoying permanent message, with red problem sign in tray, about how to get back Netw.Manag. This was treated as:
Take a note: these workarounds are ugly. They have side effects.
dpkg --purge --force-depends update-notifier