apt-get MD5Sum mismatch problem with emacs21

[bpilgrim1979]

I've had this problem with first Add Programs and then command line apt-get. What's wrong?


# sudo apt-get update
# sudo apt-get upgrade
# sudo apt-get install emacs21

Failed to fetch http://us.archive.ubuntu.com/ubuntu/pool/main/e/emacs21/emacs21-bin-common_21.3+1-8ubuntu7_i386.deb MD5Sum mismatch
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

[bpilgrim1979]

This turned out to a be problem with us.archive.ubuntu.com in /etc/apt/sources.list. (in another ubuntuforums post.) I changed to archive.ubuntu.com and everything resolved.