我无法更新...
我一直在尝试解决这个问题一段时间了......我发现的唯一方法是重新安装Ubuntu......
sudo apt-get update -o Debug::Acquire::http=true
0% [Connecting to mirror.bytemark.co.uk (212.110.161.69)] [Connecting to archivGET /ubuntu/dists/trusty/InRelease HTTP/1.1
Host: archive.canonical.com
Cache-Control: max-age=0
Accept: text/*
Range: bytes=213-
If-Range: Mon, 02 Jun 2014 21:50:58 GMT
User-Agent: Debian APT-HTTP/1.3 (1.0.1ubuntu2)
0% [Connecting to mirror.bytemark.co.uk (212.110.161.69)] [Waiting for headers]GET /ubuntu/dists/trusty/InRelease HTTP/1.1
Host: mirror.bytemark.co.uk
Cache-Control: max-age=0
Accept: text/*
Range: bytes=213-
If-Range: Sat, 07 Jun 2014 00:11:36 GMT
User-Agent: Debian APT-HTTP/1.3 (1.0.1ubuntu2)
GET /ubuntu/dists/trusty/InRelease HTTP/1.1
Host: extras.ubuntu.com
Cache-Control: max-age=0
Accept: text/*
Range: bytes=213-
If-Range: Sat, 07 Jun …