Comment 5 for bug 645436

There are still strange things in this package: It contains a typo: "extas" instead of "extras" and it mentions "removal keyring":

root@legolas:~# apt-get install ubuntu-extras-keyring
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
  kdesudo update-manager-kde
Use 'apt-get autoremove' to remove them.
The following NEW packages will be installed
  ubuntu-extras-keyring
0 upgraded, 1 newly installed, 0 to remove and 1 not upgraded.
Need to get 3,320B of archives.
After this operation, 49.2kB of additional disk space will be used.
Get:1 http://archive.monubuntu.fr/ maverick/main ubuntu-extras-keyring all 2010.09.17 [3,320B]
Fetched 3,320B in 0s (42.8kB/s)
Selecting previously deselected package ubuntu-extras-keyring.
(Reading database ... 224566 files and directories currently installed.)
Unpacking ubuntu-extras-keyring (from .../ubuntu-extras-keyring_2010.09.17_all.deb) ...
Setting up ubuntu-extras-keyring (2010.09.17) ...
Importing extas.ubuntu.com keyring
OK
Processing extas.ubuntu.com removal keyring
OK
root@legolas:~#