The Debian Project aims to create a completely free operating system called Debian. This is the fourth update of Debian 6.0 codenamed "squeeze". It mainly has fixes for security issues along with a host of updates. Know more about Debian 6.0.4.
This update adds on corrections for security issues with the stable release, adding a few adjustments to solve serious problems. Some package updates are included which is recommended to be updated through an up-to-date Debian mirror after an installation.
Kernel updated to include various security fixes and to add support for various controllers and drivers
Adds important corrections to the some of the packages
See Debian 6.0.4 announcement for the specifics....