http://mortalpowers.com/tags/browsers

...and then I followed the instructions "How to install Chromium on 
Ubuntu" and this is what happened:

---------begin output on next line-------------------------
$ sudo apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 4E5E17B5
[sudo] password for mbmiller: 
Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --secret-keyring /etc/apt/secring.gpg --trustdb-name /etc/apt/trustdb.gpg --keyring /etc/apt/trusted.gpg --recv-keys --keyserver keyserver.ubuntu.com 4E5E17B5
gpg: requesting key 4E5E17B5 from hkp server keyserver.ubuntu.com
gpg: key 4E5E17B5: public key "Launchpad PPA for chromium-daily" imported
gpg: no ultimately trusted keys found
gpg: Total number processed: 1
gpg:               imported: 1  (RSA: 1)


$ sudo add-apt-repository ppa:chromium-daily
Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --secret-keyring /etc/apt/secring.gpg --trustdb-name /etc/apt/trustdb.gpg --keyring /etc/apt/trusted.gpg --keyserver keyserver.ubuntu.com --recv FBEF0D696DE1C72BA5A835FE5A9BF3BB4E5E17B5
gpg: requesting key 4E5E17B5 from hkp server keyserver.ubuntu.com
gpg: key 4E5E17B5: "Launchpad PPA for chromium-daily" not changed
gpg: Total number processed: 1
gpg:              unchanged: 1


$ sudo apt-get update sudo apt-get install chromium-browser chromium-codecs-ffmpeg-nonfree
E: The update command takes no arguments
---------end output on previous line-----------------------


I am running Karmic (9.10), so I thought it would work but it looks like 
the key is the issue.  I don't know anything about these keys.  Was I 
supposed to create my own key and not use the one given on the web page? 
If so, how do I do that?

Thanks in advance.

Mike