Debian update 6.0.4 is released on January 28th, 2012

The Debian 6.0 codename is squeeze.
On January 28th, 2012 the Debian team has released Debian 6.0.4 version.
The 6.0.4 version fixed several issues occurred since the release of first version.
You can find more details, here .

The complete lists of packages that have changed with this revision : http://ftp.debian.org/debian/dists/squeeze/ChangeLog

Regards,
maniac.vardhan