Thank you very much.. it works, my pacakage manager stopped giving error. and its working fine now. after i installed all repositories i got a error at last :
W: GPG error: http://packages.medibuntu.org hardy Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 2EBC26B60C5A2783 but it didnt seem to create any problem, everything is working fine as usual. -- update manager bug-Error opening cache. list of sources cannot be read https://bugs.launchpad.net/bugs/302625 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs