我似乎无法从 11.04 升级到 Oneiric，因为：
Error during update
A problem occurred during the update. This is usually some sort of
network problem, please check your network connection and retry.
W:Failed to fetch http://security.ubuntu.com/ubuntu/dists/oneiric-security/multivers/binary-amd64/Packages
404 Not Found [IP: 91.189.92.167 80], W:Failed to fetch
gzip:/var/lib/apt/lists/partial/security.ubuntu.com_ubuntu_dists_oneiric-security_main_binary-i386_Packages
Hash Sum mismatch, W:Failed to fetch
gzip:/var/lib/apt/lists/partial/security.ubuntu.com_ubuntu_dists_oneiric-security_universe_binary-i386_Packages
Hash Sum mismatch, E:Some index files failed to download. They have been ignored, or
用旧的来代替。
现在我想检查一下我的网络连接，尽管它可以找到所有其他包，并且它当然返回我的网络没有问题。所以我决定自己 ping 这个包位置的 IP（91.189.92.167），结果如下：
PING 91.189.92.167 (91.189.92.167) 56(84) bytes of data.
64 bytes from 91.189.92.167: icmp_req=1 ttl=128 time=40.5 ms
64 bytes from 91.189.92.167: icmp_req=2 ttl=128 time=39.6 ms
64 bytes from 91.189.92.167: icmp_req=3 ttl=128 time=41.0 ms
64 bytes from 91.189.92.167: icmp_req=4 ttl=128 time=38.7 ms
64 bytes from 91.189.92.167: icmp_req=5 ttl=128 time=41.1 ms
64 bytes from 91.189.92.167: icmp_req=6 ttl=128 time=38.6 ms
--- 91.189.92.167 ping statistics ---
6 packets transmitted, 6 received, 0% packet loss, time 5009ms
rtt min/avg/max/mdev = 38.658/39.967/41.195/1.038 ms
这意味着那边一切都很好。所以我想也许主机无法解析，所以我执行了 host -v：
sam@ubuntu:~$ host -v security.ubuntu.com
Trying "security.ubuntu.com"
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 30243
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;security.ubuntu.com. IN A
;; ANSWER SECTION:
security.ubuntu.com. 5 IN A 91.189.92.167
security.ubuntu.com. 5 IN A 91.189.92.166
Received 69 bytes from 192.168.153.2#53 in 37 ms
Trying "security.ubuntu.com"
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 42468
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; QUESTION SECTION:
;security.ubuntu.com. IN AAAA
;; AUTHORITY SECTION:
ubuntu.com. 5 IN SOA ns1.canonical.com.hostmaster.ca nonical.com. 2012011402 10800 3600 604800 3600
Received 98 bytes from 192.168.153.2#53 in 39 ms
Trying "security.ubuntu.com"
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 23755
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; QUESTION SECTION:
;security.ubuntu.com. IN MX
;; AUTHORITY SECTION:
ubuntu.com. 5 IN SOA ns1.canonical.com.hostmaster.ca nonical.com. 2012011402 10800 3600 604800 3600
Received 98 bytes from 192.168.153.2#53 in 40 ms
这看起来又很漂亮所以我坚持认为由于某种原因它必须是这样的：
Hash Sum mismatch, E:Some index files failed to download. They have been ignored, or
old ones used instead.
因此我进行了一些搜索，发现了 ppa repos 的一个问题：更新管理器拒绝更新
但问题是我没有使用 ppa，所以这不是我的问题。
有谁知道还有什么可以阻止我升级我的 Ubuntu？
也许我忽略了眼前的某些事情，而且刚好过了我的睡觉时间，无论如何我都完全不知所措。
谢谢，
编辑：此外，当我尝试执行 sudo apt-get update 时，我得到：
Err http://security.ubuntu.com oneiric-security/multiverse amd64 Packages
404 Not Found [IP: 91.189.92.167 80]
W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/oneiric-security/multiverse/binary-amd64/Packages 404 Not Found [IP: 91.189.92.167 80]
E: Some index files failed to download. They have been ignored, or old ones used instead.
答案1
您的 sources.list 中有一个拼写错误（multivers而不是multiversefor oneiric-security 存储库），这导致404 未找到错误
对于那两个哈希值不匹配错误：删除文件/var/lib/apt/列表/部分/并尝试再次更新。
如果仍然收到此错误下载http://security.ubuntu.com/ubuntu/dists/oneiric-security/main/binary-i386/Packages.gz，请计算 MD5 校验和并将其与http://security.ubuntu.com/ubuntu/dists/oneiric-security/Release
它们匹配吗？