This might be old news, but I am in Thailand (transparent proxy) and have been having bad signature problems since I started using Ubuntu, but the "apt-get update -o Acquire::http::No-Cache=True" command fixed it for me.
This might be old news, but I am in Thailand (transparent proxy) and have been having bad signature problems since I started using Ubuntu, but the "apt-get update -o Acquire: :http:: No-Cache= True" command fixed it for me.