Ok, I still have the offending proxy-setting in config file and as it happens to-day:
> Preparing to unpack .../clamav-freshclam_0.98.7+dfsg-4_amd64.deb ... > Unpacking clamav-freshclam (0.98.7+dfsg-4) over (0.98.7+dfsg-3) ... > Preparing to unpack .../clamav_0.98.7+dfsg-4_amd64.deb ... > Unpacking clamav (0.98.7+dfsg-4) over (0.98.7+dfsg-3) ... .. > Setting up clamav-freshclam (0.98.7+dfsg-4) ... > Installing new version of config file /etc/init.d/clamav-freshclam ... > Setting up clamav (0.98.7+dfsg-4) ... So hence verified: at least the original manifestation of the bug has disappeared. Thank you. What still remains a mystery is the way how I got the proxy-setting that contains non-ascii characters. -- Antti Järvinen