the ppa I added to /etc/apt/sources.list is 404ing when using update manager to try to upgrade

chromium_update_manager_failures.md

from my /etc/apt/sources.list

 # Google chrome
 deb http://ppa.launchpad.net/chromium-daily/ppa/ubuntu karmic main
 deb-src http://ppa.launchpad.net/chromium-daily/ppa/ubuntu karmic main

update manager's error output

 W: Failed to fetch http://ppa.launchpad.net/chromium-daily/ppa/ubuntu/pool/main/c/chromium-browser/chromium-codecs-ffmpeg_11.0.695.0~svn20110307r77122-0ubuntu1~ucd1~karmic_amd64.deb
   404  Not Found


 W: Failed to fetch http://ppa.launchpad.net/chromium-daily/ppa/ubuntu/pool/main/c/chromium-browser/chromium-browser-inspector_11.0.695.0~svn20110307r77122-0ubuntu1~ucd1~karmic_all.deb
   404  Not Found


 W: Failed to fetch http://ppa.launchpad.net/chromium-daily/ppa/ubuntu/pool/main/c/chromium-browser/chromium-browser_11.0.695.0~svn20110307r77122-0ubuntu1~ucd1~karmic_amd64.deb
   404  Not Found

when using apt-get upgrade

 The following packages will be upgraded:
   chromium-browser chromium-browser-inspector chromium-codecs-ffmpeg [snip]

 Get:X http://ppa.launchpad.net karmic/main chromium-codecs-ffmpeg 11.0.696.0~svn20110308r77272-0ubuntu1~ucd1~karmic [309kB]
 Get:X http://ppa.launchpad.net karmic/main chromium-browser-inspector 11.0.696.0~svn20110308r77272-0ubuntu1~ucd1~karmic [577kB]
 Get:X http://ppa.launchpad.net karmic/main chromium-browser 11.0.696.0~svn20110308r77272-0ubuntu1~ucd1~karmic [16.4MB]

 [snip]

 Preparing to replace chromium-codecs-ffmpeg 11.0.687.0~svn20110301r76345-0ubuntu1~ucd1~karmic (using .../chromium-codecs-ffmpeg_11.0.696.0~svn20110308r77272-0ubuntu1~ucd1~karmic_amd64.deb) ...
 Unpacking replacement chromium-codecs-ffmpeg ...
 Preparing to replace chromium-browser-inspector 11.0.688.0~svn20110302r76501-0ubuntu1~ucd1~karmic (using .../chromium-browser-inspector_11.0.696.0~svn20110308r77272-0ubuntu1~ucd1~karmic_all.deb) ...
 Unpacking replacement chromium-browser-inspector ...
 Preparing to replace chromium-browser 11.0.687.0~svn20110301r76345-0ubuntu1~ucd1~karmic (using .../chromium-browser_11.0.696.0~svn20110308r77272-0ubuntu1~ucd1~karmic_amd64.deb) ...
 Unpacking replacement chromium-browser ...

 [snip]

 Setting up chromium-browser-inspector (11.0.696.0~svn20110308r77272-0ubuntu1~ucd1~karmic) ...
 Setting up chromium-codecs-ffmpeg (11.0.696.0~svn20110308r77272-0ubuntu1~ucd1~karmic) ...
 Setting up chromium-browser (11.0.696.0~svn20110308r77272-0ubuntu1~ucd1~karmic) ...