Note: 3.1_r0 CD image problem

A bug has been discovered in the 3.1_r0 CD/DVD images: new installs from these images will have a commented-out entry in /etc/apt/sources.list for "http://security.debian.org/ testing/updates" rather than an active entry for "http://security.debian.org/ stable/updates", and thus will not get security updates by default. This was due to incorrect Release files on the images.

If you have already installed a system using a 3.1r0 CD/DVD image, you do not need to reinstall. Instead, simply edit /etc/apt/sources.list, look for any lines mentioning security.debian.org, change "testing" to "stable", and remove "# " from the start of the line.

If you installed other than from a CD or DVD (for example, netboot, or booting from floppy and installing the base system from the network), you are not affected by this bug.

These new 3.1_r0a images correct this flaw. We apologise for the inconvenience.