업데이트 관리자가 작동하지 않습니다

Hi 업데이트에서 CHECK 버튼을 누르면 사용 가능한 업데이트를 찾지 않습니다.

아래 오류가 발생합니다.

"Failed to Download repository information"

Check your Internet connection..

W:GPG error: http://archive.canonical.com oneiric Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <ftpmaster@ubuntu.com>
W:GPG error: http://archive.canonical.com lucid Release: The following signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive Automatic Signing Key <ftpmaster@ubuntu.com>
W:Failed to fetch gzip:/var/lib/apt/lists/partial/archive.ubuntu.com_ubuntu_dists_oneiric_main_source_Sources  Hash Sum mismatch
E:Some index files failed to download. They have been ignored, or old ones used instead.

우분투 버전 11.10

터미널에서 사용해보십시오

sudo apt-get clean
cd /var/lib/apt
sudo mv lists lists.old
sudo mkdir -p lists/partial
sudo apt-get clean
sudo apt-get update