root@debian:/home/sigma# dpkg --add-architecture i386
root@debian:/home/sigma# apt-get update
Hit http://ftp.us.debian.org wheezy Release.gpg
Hit http://ftp.us.debian.org wheezy-updates Release.gpg
Hit http://ftp.us.debian.org wheezy Release
Hit http://security.debian.org wheezy/updates Release.gpg
Hit http://ftp.us.debian.org wheezy-updates Release
Hit http://security.debian.org wheezy/updates Release
Hit http://ftp.us.debian.org wheezy/main Sources
Hit http://ftp.us.debian.org wheezy/main amd64 Packages
Hit http://security.debian.org wheezy/updates/main amd64 Packages
Get:1 http://ftp.us.debian.org wheezy/main i386 Packages [5,859 kB]
Get:2 http://security.debian.org wheezy/updates/main i386 Packages [272 kB]
Hit http://security.debian.org wheezy/updates/main Translation-en
Hit http://ftp.us.debian.org wheezy/main Translation-en
Hit http://ftp.us.debian.org wheezy-updates/main Sources
Hit http://ftp.us.debian.org wheezy-updates/main amd64 Packages/DiffIndex
Get:3 http://ftp.us.debian.org wheezy-updates/main i386 Packages [4,366 B]
Hit http://ftp.us.debian.org wheezy-updates/main Translation-en/DiffIndex
Fetched 6,135 kB in 4s (1,303 kB/s)
W: Failed to fetch http://security.debian.org/dists/wheezy/updates/main/binary-i386/Packages  Hash Sum mismatch

E: Some index files failed to download. They have been ignored, or old ones used instead.