Debian Squeeze: Update nfs-kernel-server to squeeze-backports

# Debian Squeeze backports
cat < /etc/apt/sources.list.d/squeeze-backports.list
deb http://ftp.de.debian.org/debian-backports squeeze-backports main
deb-src http://ftp.de.debian.org/debian-backports squeeze-backports main
EOF

apt-get update
apt-get -t squeeze-backports install -y nfs-kernel-server
apt-get autoremove -y
reboot

# Links
http://backports.debian.org/Instructions/