Samba 3.0.2, ClamAV 0.65, and Mailman 2.1.4 packages for Debian GNU/Linux 3.0 are now available at Backports.org

Here the apt sources:

# Samba 3.0.2
deb http://www.backports.org/debian stable samba
deb-src http://www.backports.org/debian stable samba

# ClamAV 0.65
deb http://www.backports.org/debian stable clamav
deb-src http://www.backports.org/debian stable clamav

# Mailman 2.1.4
deb http://www.backports.org/debian stable mailman
deb-src http://www.backports.org/debian stable mailman