Having a couple o debian sarge boxes installed with 'perfect setup how-to' like to know how to upgrade bind9 to last stable version thanks
for updating the debian boxes generally: 1.) apt-get update --> this will update the repository files 2.) apt-get upgrade --> this will then upgrade the installed packages
My initial question was born on bind9 security alert where version upgrade was recomended. But if I follow the procedure as you said upgrade is done with latest debian repositories versions, not the latest version available.
The latest debian versions are patched, so they do not contain the security bugs even they have a lower version number. Just run apt-get update && apt-get upgrade regularily and your system will be up to date!