ClamAV freshly installed on LMDE - failing to open log file (permission denied)

I've just freshly installed Linux Mint Debian Edition "Faye" and then installed ClamAV. The services clamav-freshclam and clamav-daemon don't seem to have a problem opening and writing into their respective log files, I can see that the log files are continuously being filled. But when I try to run freshclam and clamd in the console I get: $ clamd ERROR: Failed to open log file /var/log/clamav/clamav.log: Permission denied ERROR: Can't initialize the internal logger $ freshclam ERROR: Failed to open log file /var/log/clamav/freshclam.log: Permission denied ERROR: Problem with internal logger (UpdateLogFile = /var/log/clamav/freshclam.log). ERROR: initialize: libfreshclam init failed. ERROR: Initialization error! When I try the same with sudo: $ sudo freshclam ERROR: Failed to lock the log file /var/log/clamav/freshclam.log: Resource temporarily unavailable ERROR: Problem with internal logger (UpdateLogFile = /var/log/clamav/freshclam.log). ERROR: initialize: libfreshclam init failed. ERROR: Initialization error! $ sudo clamd ERROR: Failed to lock the log file /var/log/clamav/clamav.log: Resource temporarily unavailable ERROR: Can't initialize the internal logger The files look like this: -rw-r----- 1 clamav clamav 19042 9. Mär 20:01 clamav.log -rw------- 1 clamav clamav 11786 9. Mär 20:01 freshclam.log I'm a "not daily" Linux user. What could be wrong?