Comment 10 for bug 557316

Really? I just nuked the backends_debian file and after restart of acng... it still worked, just as requested in this task!

Could you try something? Put "Debug=5" into the first line (!) of acng.conf and restart with the init script. And show the output. Mine is:

# /etc/init.d/apt-cacher-ng restart
Restarting apt-cacher-ng: apt-cacher-ngReading rewrite file: /etc/apt-cacher-ng/deb_mirrors.gz
created empty backend entry for debrep
Reading backend file: /etc/apt-cacher-ng/backends_debian
No backend data found, file ignored.
Trying to read replacement from /etc/apt-cacher-ng/backends_debian.default
Reading backend file: /etc/apt-cacher-ng/backends_debian.default
Reading rewrite file: /etc/apt-cacher-ng/ubuntu_mirrors
created empty backend entry for uburep
Reading backend file: /etc/apt-cacher-ng/backends_ubuntu
No backend data found, file ignored.
Trying to read replacement from /etc/apt-cacher-ng/backends_ubuntu.default
Reading backend file: /etc/apt-cacher-ng/backends_ubuntu.default
Reading rewrite file: /etc/apt-cacher-ng/debvol_mirrors.gz
created empty backend entry for debvol
Reading backend file: /etc/apt-cacher-ng/backends_debvol

Additional debugging information not compiled in.