I installed Kubuntu and tried it for few days, here are some tips for you if you are planning to instal Kubuntu. Kubuntu is the distant cousin of Ubuntu and uses KDE as its desktop environment. Canonical doesn't pay as much attention to Kubuntu, Kubuntu is generally regarded as one of the worst KDE based distros. I've heard that OpenSuse is a better option to try KDE. Here are few quick things to setup in Kubuntu:
1. Install Flash 10
To install the official Adobe Flash plugin (Flash 10) for Firefox, install the adobe-flashplugin package:
sudo apt-get install adobe-flashplugin
2. Install Java 6.0
sudo apt-get install sun-java6-jre sun-java6-plugin
3. Install GIMP: I don't know why KDE doesn't ship with GIMP. It is obviously the best image editor other than Photoshop. One of the reasons for this could be that GIMP is an GTK based app.
sudo apt-get install gimp
Initially GIMP will look ugly but we can change that easily later on.
4. Turn off Wallet: The wallet must be one of the most irritating thing ever made for PC. It keeps on nagging for your password after every 5 min. So here is how you stop it.
K Menu > Applications > Settings > Wallet Management
Now look in your System Tray (it is normally at the extreme right side on your panel) for one brown colored icon. Right click on it and select configure wallet and then uncheck Enable KDE wallet subsystem.
5. Play DVDs:
sudo apt-get install libdvdcss2
if this doesnt work for some reasons use this command:
6. Make GTK Apps Beautiful: If you try installing Gnome apps like GIMP, Firefox in KDE they will look ugly because they are based on GTK. To make them look like a normal (and beautiul) KDE app type this in a terminal:
sudo apt-get install gtk-qt-engine-kde4
Now got to K Menu > System Settings > Appearence > GTK Styles and Fonts
Here select the option Use my KDE style in GTK applications
also select Use my KDE fonts in GTK applications
Now your Gnome apps will start looking pretty too. After using the above settings my GIMP started looking good before using that GIMP looked like some Windows 98 software :P
7. Add Avatar: You can add cool avatars for your account.
Go to Settings > About Me > Password and User Account
Well KDE 4.1 motto says 'Don't look back' well I have decided that from now on I won't ever try KDE. On the very next day Plasma crashed and I had to reinstall Ubuntu.