I am newbie to both Ubuntu and R.
I am trying to install R 2.15.2 on ubuntu. Since the latest version of R is 3.0.X, I specified the version in /etc/apt/sources.list
Okay so the URL for where the packages are found has changed :^) on the cran.ma site:
Change the debian url to:
deb http://cran.ma.imperial.ac.uk/bin/linux/ubuntu precise/
do an apt-get update and try reinstalling
apt-get update
The complete instructions are on:
http://cran.ma.imperial.ac.uk/bin/linux/ubuntu/