Thank you very much. I looks like it worked; update manager says I have 4 updates regarding Medibuntu -- although they didn't completely go through because of that java error.
~$ sudo wget
http://www.medibuntu.org/sources.list.d/hardy.list --output-document=/etc/apt/sources.list.d/medibuntu.list && sudo apt-get -q update && sudo apt-get --yes -q --allow-unauthenticated install medibuntu-keyring && sudo apt-get -q update
[sudo] password for freegeek:
--00:25:08--
http://www.medibuntu.org/sources.list.d/hardy.list
=> `/etc/apt/sources.list.d/medibuntu.list'
Resolving
www.medibuntu.org... 87.98.242.110
Connecting to
www.medibuntu.org|87.98.242.110|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 276 [text/plain]
100%[====================================>] 276 --.--K/s
00:25:11 (12.02 MB/s) - `/etc/apt/sources.list.d/medibuntu.list' saved [276/276]
Hit
http://archive.canonical.com hardy Release.gpg
Ign
http://archive.canonical.com hardy/partner Translation-en_US
Ign
http://ftp.osuosl.org hardy/ Release.gpg
Ign
http://ftp.osuosl.org hardy/ Translation-en_US
Hit
http://ubuntu.osuosl.org hardy Release.gpg
Get:1
http://packages.medibuntu.org hardy Release.gpg [197B]
Ign
http://packages.medibuntu.org hardy/free Translation-en_US
Ign
http://packages.medibuntu.org hardy/non-free Translation-en_US
Ign
http://ubuntu.osuosl.org hardy/main Translation-en_US
Hit
http://archive.canonical.com hardy Release
Ign
http://ubuntu.osuosl.org hardy/restricted Translation-en_US
Ign
http://ubuntu.osuosl.org hardy/universe Translation-en_US
Ign
http://ubuntu.osuosl.org hardy/multiverse Translation-en_US
Hit
http://ubuntu.osuosl.org hardy-updates Release.gpg
Ign
http://ubuntu.osuosl.org hardy-updates/main Translation-en_US
Ign
http://ubuntu.osuosl.org hardy-updates/restricted Translation-en_US
Ign
http://ftp.osuosl.org hardy/ Release
Ign
http://ubuntu.osuosl.org hardy-updates/universe Translation-en_US
Ign
http://ubuntu.osuosl.org hardy-updates/multiverse Translation-en_US
Hit
http://ubuntu.osuosl.org hardy-backports Release.gpg
Ign
http://ubuntu.osuosl.org hardy-backports/main Translation-en_US
Get:2
http://packages.medibuntu.org hardy Release [11.7kB]
Ign
http://ftp.osuosl.org hardy/ Packages
Ign
http://ubuntu.osuosl.org hardy-backports/restricted Translation-en_US
Ign
http://ubuntu.osuosl.org hardy-backports/universe Translation-en_US
Ign
http://ubuntu.osuosl.org hardy-backports/multiverse Translation-en_US
Hit
http://ubuntu.osuosl.org hardy-security Release.gpg
Ign
http://ubuntu.osuosl.org hardy-security/main Translation-en_US
Ign
http://ubuntu.osuosl.org hardy-security/restricted Translation-en_US
Ign
http://ubuntu.osuosl.org hardy-security/universe Translation-en_US
Hit
http://ftp.osuosl.org hardy/ Packages
Ign
http://ubuntu.osuosl.org hardy-security/multiverse Translation-en_US
Hit
http://archive.canonical.com hardy/partner Packages
Hit
http://ubuntu.osuosl.org hardy-proposed Release.gpg
Ign
http://ubuntu.osuosl.org hardy-proposed/restricted Translation-en_US
Ign
http://ubuntu.osuosl.org hardy-proposed/main Translation-en_US
Ign
http://packages.medibuntu.org hardy Release
Hit
http://archive.canonical.com hardy/partner Sources
Ign
http://ubuntu.osuosl.org hardy-proposed/multiverse Translation-en_US
Ign
http://ubuntu.osuosl.org hardy-proposed/universe Translation-en_US
Hit
http://ubuntu.osuosl.org hardy Release
Hit
http://ubuntu.osuosl.org hardy-updates Release
Hit
http://ubuntu.osuosl.org hardy-backports Release
Hit
http://ubuntu.osuosl.org hardy-security Release
Get:3
http://packages.medibuntu.org hardy/free Packages [6334B]
Hit
http://ubuntu.osuosl.org hardy-proposed Release
Hit
http://ubuntu.osuosl.org hardy/main Packages
Hit
http://ubuntu.osuosl.org hardy/restricted Packages
Hit
http://ubuntu.osuosl.org hardy/main Sources
Hit
http://ubuntu.osuosl.org hardy/restricted Sources
Hit
http://ubuntu.osuosl.org hardy/universe Packages
Hit
http://ubuntu.osuosl.org hardy/universe Sources
Hit
http://ubuntu.osuosl.org hardy/multiverse Packages
Hit
http://ubuntu.osuosl.org hardy/multiverse Sources
Get:4
http://packages.medibuntu.org hardy/non-free Packages [7345B]
Hit
http://ubuntu.osuosl.org hardy-updates/main Packages
Hit
http://ubuntu.osuosl.org hardy-updates/restricted Packages
Hit
http://ubuntu.osuosl.org hardy-updates/main Sources
Hit
http://ubuntu.osuosl.org hardy-updates/restricted Sources
Hit
http://ubuntu.osuosl.org hardy-updates/universe Packages
Hit
http://ubuntu.osuosl.org hardy-updates/universe Sources
Hit
http://ubuntu.osuosl.org hardy-updates/multiverse Packages
Hit
http://ubuntu.osuosl.org hardy-updates/multiverse Sources
Hit
http://ubuntu.osuosl.org hardy-backports/main Packages
Hit
http://ubuntu.osuosl.org hardy-backports/restricted Packages
Hit
http://ubuntu.osuosl.org hardy-backports/universe Packages
Hit
http://ubuntu.osuosl.org hardy-backports/multiverse Packages
Hit
http://ubuntu.osuosl.org hardy-security/main Packages
Hit
http://ubuntu.osuosl.org hardy-security/restricted Packages
Hit
http://ubuntu.osuosl.org hardy-security/main Sources
Hit
http://ubuntu.osuosl.org hardy-security/restricted Sources
Hit
http://ubuntu.osuosl.org hardy-security/universe Packages
Hit
http://ubuntu.osuosl.org hardy-security/universe Sources
Hit
http://ubuntu.osuosl.org hardy-security/multiverse Packages
Hit
http://ubuntu.osuosl.org hardy-security/multiverse Sources
Hit
http://ubuntu.osuosl.org hardy-proposed/restricted Packages
Hit
http://ubuntu.osuosl.org hardy-proposed/main Packages
Hit
http://ubuntu.osuosl.org hardy-proposed/multiverse Packages
Hit
http://ubuntu.osuosl.org hardy-proposed/universe Packages
Hit
http://apt.freegeek.org hardy Release.gpg
Ign
http://apt.freegeek.org hardy/main Translation-en_US
Hit
http://apt.freegeek.org dapper Release.gpg
Hit
http://web.freegeek.org freegeek Release.gpg
Ign
http://web.freegeek.org freegeek/public Translation-en_US
Ign
http://web.freegeek.org freegeek/ubuntu Translation-en_US
Ign
http://apt.freegeek.org dapper/main Translation-en_US
Hit
http://apt.freegeek.org hardy Release
Hit
http://web.freegeek.org freegeek Release
Hit
http://apt.freegeek.org dapper Release
Ign
http://web.freegeek.org freegeek/public Packages
Ign
http://apt.freegeek.org hardy/main Packages
Ign
http://web.freegeek.org freegeek/ubuntu Packages
Ign
http://apt.freegeek.org dapper/main Packages
Hit
http://web.freegeek.org freegeek/public Packages
Hit
http://apt.freegeek.org hardy/main Packages
Hit
http://web.freegeek.org freegeek/ubuntu Packages
Hit
http://apt.freegeek.org dapper/main Packages
Fetched 25.6kB in 12s (2059B/s)
Reading package lists...
W: GPG error:
http://packages.medibuntu.org hardy Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 2EBC26B60C5A2783
W: You may want to run apt-get update to correct these problems
Reading package lists...
Building dependency tree...
Reading state information...
The following NEW packages will be installed:
medibuntu-keyring
0 upgraded, 1 newly installed, 0 to remove and 4 not upgraded.
1 not fully installed or removed.
Need to get 3448B of archives.
After this operation, 49.2kB of additional disk space will be used.
WARNING: The following packages cannot be authenticated!
medibuntu-keyring
Authentication warning overridden.
Get:1
http://packages.medibuntu.org hardy/free medibuntu-keyring 2008.04.20 [3448B]
Fetched 3448B in 0s (9309B/s)
Selecting previously deselected package medibuntu-keyring.
(Reading database ... 106241 files and directories currently installed.)
Unpacking medibuntu-keyring (from .../medibuntu-keyring_2008.04.20_all.deb) ...
Setting up sun-java6-doc (6-14-0ubuntu1.8.04) ...
This package is an installer package, it does not actually contain the
JDK documentation. You will need to go download one of the
archives:
jdk-6u10-docs.zip jdk-6u10-docs-ja.zip
(choose the non-update version if this is the first installation).
Please visit
http://java.sun.com/javase/downloads/
now and download. The file should be owned by root.root and be copied
to /tmp.
[Press RETURN to try again, 'no' + RETURN to abort]