What is the exact error message and id you do an 'apt-get update' after adding the repos?
Are you using Synaptic or apt-get? The packages are definately there:
Code:
apt-cache search clamav
clamav - antivirus scanner for Unix
clamav-base - base package for clamav, an anti-virus utility for Unix
clamav-daemon - antivirus scanner daemon
clamav-data - clamav data files
clamav-docs - documentation package for clamav, an anti-virus utility for Unix
clamav-freshclam - downloads clamav virus databases from the Internet
clamav-getfiles - Update script for clamav
clamav-milter - antivirus scanner for sendmail
clamav-testfiles - use these files to test that your Antivirus program works
clamsmtp - SMTP virus-scanning proxy
libclamav-dev - clam Antivirus library development files
libclamav1 - virus scanner library
sylpheed-claws-clamav - Clam AntiVirus plugin for Sylpheed Claws