Unable to download

[Robert Rothenberg]

I have added the apt line

  deb http://mozilla.debian.net/ squeeze-backports iceweasel-5

and installed Iceweasel 5. Recently found that it started giving me
errors whenever I updated the package lists. I checked the
mozilla.debian.net website, and updated it to

  deb http://mozilla.debian.net/ squeeze-backports iceweasel-release

but I still get the following error whenever I update the package repository:

  Fetch failed: W:Failed to fetch
http://mozilla.debian.net/dists/squeeze-backports/Release  Unable to
find expected entry  iceweasel-5.0/binary-amd64/Packages in Meta-index
file (malformed Release file?), E:Some index files failed to download,
they have been ignored, or old ones used instead.