Matlab R2011a icon not working in the Unity Launcher (11.04 - 64bit)

[Blitz Tungsten]

I've just installed MATLAB R2011a (64bit version) in the latest Ubuntu 11.04 (obviously 64bit as well).

I've followed this http://thameera.wordpress.com/2010/10/21/installing-matlab-2008a-on-ubuntu-10-10/ for the installation part.

Then after running Matlab for the first time with the command:

sh /usr/local/matlab/bin/matlab

I right-clicked on the Unity Launcher to add Matlab, but after logging off it disappeared from there.

Then from Ubuntu help I've tried:

1. Get an icon:

sudo wget http://upload.wikimedia.org/wikipedia/commons/2/21/Matlab_Logo.png -O /usr/share/icons/matlab.png

2. Get the launcher file:

sudo wget 'https://help.ubuntu.com/community/MATLAB?action=AttachFile&do=get&target=matlab-r2011a.desktop' -O /usr/share/applications/matlab.desktop

The icon remains there after closing Matlab, but I've yet to log-off or restart.

The problem is that when I click on it, it does nothing!

So to open Matlab I've always to type in terminal:

sh /usr/local/matlab/bin/matlab

Did any of you succeed in putting a working icon of Matlab in the brand new Unity Launcher?

Thanks in advance!