Alternate apt-get mirrors.
add the following in the file /etc/apt/sources.list
# main sources
#
deb http://debian.intergenia.de/debian/ sarge main contrib non-free
#deb-src http://debian.intergenia.de/debian/ sarge main contrib non-free
# non-us
#
deb http://debian.intergenia.de/debian-non-US/ sarge/non-US main contrib non-free
#deb-src http://debian.intergenia.de/debian-non-US/ sarge/non-US main contrib non-free
# security
#
deb http://debian.intergenia.de/debian-security/ sarge/updates main contrib non-free
#deb-src http://debian.intergenia.de/debian-security/ sarge/updates main contrib non-free
# Plesk
#deb http://autoinstall.plesk.com/debian PSA_8.0.1/
# PHP5
#deb http://people.debian.org/~dexter php5 sarge
deb http://dotdeb.netmirror.org/ stable all
deb-src http://dotdeb.netmirror.org/ stable all