Install Plasma KDE on Ubuntu 14.04

After few boring problems on Mint, i decided to switch back to Ubuntu.<br />
As I don't like Ubuntu's Unity, here is the easy way to install Plasma Desktop (KDE) on it.<br />
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&nbsp; We will be using kubuntu-desktop package, as it is the most easy and problem-free way of installing the plasma desktop:<br />
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<pre style="background-color: #eeeeee; border: 0px; font-family: 'Ubuntu Mono', 'Ubuntu Beta Mono A', Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace; margin-bottom: 10px; max-height: 600px; overflow: auto; padding: 5px; vertical-align: baseline; width: auto; word-wrap: normal;"><span style="background-color: transparent; color: #0b5394;">sudo apt-get update &amp;&amp; install kubuntu-desktop</span></pre>
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This install the most important packages. It may take a while to download everything, but the result is very interesting, log out, select KDE Plasma on Desktop environment and you're ready!<br />
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Also, if you want to replace Ubuntu's default greeter by kdm, you can do it easly too:<br />
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<pre style="background-color: #eeeeee; border: 0px; font-family: 'Ubuntu Mono', 'Ubuntu Beta Mono A', Consolas, 'Bitstream Vera Sans Mono', 'Courier New', Courier, monospace; margin-bottom: 10px; max-height: 600px; overflow: auto; padding: 5px; vertical-align: baseline; width: auto; word-wrap: normal;"><span style="background-color: transparent; color: #0b5394;"> sudo apt-get install kdm</span></pre>
It will ask you to set the default login interface, just choose kdm!<br />
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<tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjwFq4ispPdKpa8kMflNEPdo8DdrF0ICcxsjOMPl57GBW_1La6CtkbQNsXKMqWzaoO5P-6NW6vQZPGWhbu3wMf2eli2V3S83TB9b3noAvsGQXxGJPrJuGPb4MM7dajAL5daEP9PDXtfiDfb/s1600/snapshot1.png" imageanchor="1" style="margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjwFq4ispPdKpa8kMflNEPdo8DdrF0ICcxsjOMPl57GBW_1La6CtkbQNsXKMqWzaoO5P-6NW6vQZPGWhbu3wMf2eli2V3S83TB9b3noAvsGQXxGJPrJuGPb4MM7dajAL5daEP9PDXtfiDfb/s1600/snapshot1.png" height="225" width="400" /></a></td></tr>
<tr><td class="tr-caption" style="text-align: center;"><i>Plasma Desktop</i></td></tr>
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