我正在运行 Ubuntu 11.10。在尝试使用 Update Manager GUI 检查更新时，我遇到以下错误：
无法下载存储库信息 检查您的 Internet 连接。
细节：
W:Failed to fetch bzip2:/var/lib/apt/lists/partial
/in.archive.ubuntu.com_ubuntu_dists_oneiric_restricted_binary-i386_Packages Hash Sum mismatch
, W:Failed to fetch bzip2:/var/lib/apt/lists/partial
/in.archive.ubuntu.com_ubuntu_dists_oneiric_universe_binary-i386_Packages Hash Sum mismatch
, W:Failed to fetch bzip2:/var/lib/apt/lists/partial
/in.archive.ubuntu.com_ubuntu_dists_oneiric_multiverse_binary-i386_Packages Hash Sum mismatch
, W:Failed to fetch http://in.archive.ubuntu.com/ubuntu/dists/oneiric/main/i18n
/Index No Hash entry in Release file /var/lib/apt/lists/partial/in.archive.ubuntu.com_ubuntu_dists_oneiric_main_i18n_Index
, W:Failed to fetch bzip2:/var/lib/apt/lists/partial/in.archive.ubuntu.com_ubuntu_dists_oneiric-updates_restricted_binary-i386_Packages Hash Sum mismatch
, E:Some index files failed to download. They have been ignored, or old ones used instead.
或详细信息如下：
W:Failed to fetch bzip2:/var/lib/apt/lists/partial/in.archive.ubuntu.com_ubuntu_dists_oneiric_restricted_binary-i386_Packages …