Ubuntu – How to remove icons from ”all applications”

Remove those as well - kubuntu-full is a metapackage, installing it will include it's recommends - uninstalling it does not unfortunately. Only way is to remove the packages as you are doing.

More information on metapackages can be found here - https://askubuntu.com/a/2230/2018

Reply to comment:

No - it's not done that. I would install synaptic and then use that to search for the kde things you have installed. It's one of those jobs easier the second time, next time do it with a terminal and copy the output so you know what gets installed.

For instance

sudo apt-get install kde-full 

get's these http://pastebin.com/QrYvxUf1

You might though find it easier and quicker to get the newest 12.04 daily and reinstall, you can use zsync to update your existing iso if you still have that.

• To view the current ones:

  gsettings get com.canonical.Unity.Launcher favorites
  

  would output something like:

  ['nautilus-home.desktop', 'chromium-browser.desktop', 'gnome-system-monitor.desktop']
  

• To add new entry, say vlc, add its .desktop file ie. vlc.desktop as:

  gsettings set com.canonical.Unity.Launcher favorites "['nautilus-home.desktop', 'chromium-browser.desktop', 'gnome-system-monitor.desktop', 'vlc.desktop']"
  

(those included in the value string "[... ... ...]" will be show up in the launcher. You can use this to add or remove the launchers of your choice.)

• To reset to the default values:

  gsettings reset com.canonical.Unity.Launcher favorites