unable to get universal repositories

hi friends, after installing new copy of ubuntu 5.10, i enabled all repositories in synaptic package manager, and when i clicked ok, it is updating, and when it tried to download, it couldnt succede, my machine is connected to net, and its working completely fine, can you ppl tell me what is the problem??

when synaptic manager is giving an error for an URI, i am typing the same in firefox and again running synaptic manager, and its working now, if i restart its not working again.. why?

Did you do a "sudo apt-get update"? What errors are you getting?

this is what i am getting if i am doing dudo apt-get update 36% [Connecting to in.archive.ubuntu.com (1.0.0.0)] [Connecting to security.ubuntu.com (1.0.0.0)] [Connecting to ca.archive.u.......

so on,, you can see that its resolving the Domain as 1.0.0.0 which is wrong.... but it works if i am accessing the site, security.ubuntu.com in firefox and again trying this... its giving like this

Get:1 http://security.ubuntu.com breezy-security Release.gpg [189B] Get:2 http://in.archive.ubuntu.com breezy Release.gpg [189B] Get:3 http://in.archive.ubuntu.com breezy-updates Release.gpg [189B] Get:4 http://in.archive.ubuntu.com breezy-backports Release.gpg [189B] Get:5 http://ca.archive.ubuntu.com breezy Release.gpg [189B] Get:6 http://security.ubuntu.com breezy-security Release [19.6kB] Hit http://in.archive.ubuntu.com breezy Release Get:7 http://ca.archive.ubuntu.com breezy Release [30.9kB] Hit http://in.archive.ubuntu.com breezy-updates Release Hit http://in.archive.ubuntu.com breezy-backports Release Hit http://in.archive.ubuntu.com breezy/main Sources Hit http://in.archive.ubuntu.com breezy/restricted Sources Hit http://in.archive.ubuntu.com breezy/universe Packages Hit http://in.archive.ubuntu.com breezy/main Packages Hit http://in.archive.ubuntu.com breezy/restricted Packages Hit http://in.archive.ubuntu.com breezy/universe Sources Hit http://in.archive.ubuntu.com breezy-updates/main Packages Hit http://in.archive.ubuntu.com breezy-updates/restricted Packages Hit http://in.archive.ubuntu.com breezy-updates/main Sources Hit http://in.archive.ubuntu.com breezy-updates/restricted Sources Get:8 http://security.ubuntu.com breezy-security/main Packages [28.5kB] Get:9 http://ca.archive.ubuntu.com breezy/universe Packages [2304kB] Hit http://in.archive.ubuntu.com breezy-backports/main Packages Hit http://in.archive.ubuntu.com breezy-backports/restricted Packages Hit http://in.archive.ubuntu.com breezy-backports/universe Packages Hit http://in.archive.ubuntu.com breezy-backports/multiverse Packages Hit http://in.archive.ubuntu.com breezy-backports/main Sources Hit http://in.archive.ubuntu.com breezy-backports/restricted Sources Hit http://in.archive.ubuntu.com breezy-backports/universe Sources Hit http://in.archive.ubuntu.com breezy-backports/multiverse Sources Get:10 http://security.ubuntu.com breezy-security/restricted Packages [4458B] Get:11 http://security.ubuntu.com breezy-security/main Sources [8844B] Get:12 http://security.ubuntu.com breezy-security/restricted Sources [960B] Get:13 http://security.ubuntu.com breezy-security/universe Packages [23.1kB] Get:14 http://security.ubuntu.com breezy-security/universe Sources [3722B]