While I run apt-get update on Ubuntu 12.04, I got the following output (partially):
Get:1985 http://archive.ubuntu.com precise Release.gpg [28.9 kB] ...
My sources.list file is not modified and I use the main server as the repository.
I tried to remove /var/lib/apt/lists/* and update again but failed.
I retrieved the Release.gpg file manually: http://archive.ubuntu.com/ubuntu/ubuntu/dists/precise/Release.gpg
Found that the file size is 198 instead of 28.9kB, any ideas?
Thank you very much!