Problem installing DIA drawing tool

[saurabh khanvilkar]

Hello,

While trying to install dia, I am facing the following error. Please help if
anyone knows the solution.

*After unpacking 3731kB of additional disk space will be used.
Do you want to continue [Y/n]? y
WARNING: The following packages cannot be authenticated!
  dia-common dia-libs dia
Install these packages without verification [y/N]? y
Err http://in.archive.ubuntu.com feisty/main dia-common 0.96.1-0ubuntu1
  404 Not Found [IP: 91.189.88.45 80]
Err http://in.archive.ubuntu.com feisty/main dia-libs 0.96.1-0ubuntu1
  404 Not Found [IP: 91.189.88.45 80]
Err http://in.archive.ubuntu.com feisty/universe dia 0.96.1-0ubuntu1
  404 Not Found [IP: 91.189.88.45 80]
Failed to fetch
http://in.archive.ubuntu.com/ubuntu/pool/main/d/dia/dia-common_0.96.1-0ubuntu1_all.deb
404 Not Found [IP: 91.189.88.45 80]
Failed to fetch
http://in.archive.ubuntu.com/ubuntu/pool/main/d/dia/dia-libs_0.96.1-0ubuntu1_i386.deb
404 Not Found [IP: 91.189.88.45 80]
Failed to fetch
http://in.archive.ubuntu.com/ubuntu/pool/universe/d/dia/dia_0.96.1-0ubuntu1_i386.deb
404 Not Found [IP: 91.189.88.45 80]
E: Unable to fetch some archives, maybe run apt-get update or try with
--fix-missing?*


Thanks!
- Saurabh
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