Debian repository 'ab' has upgraded to mini-buildd 1.0, and was moved

Please update your apt sources:

deb[-src] http://debian.installiert.net/hellfield-ab/ CODENAME-ab-SUITE main contrib non-free

with

Ye olde 0.8.x distributions roughly translate to corresponding 1.0.x distributions thusly:

Sorry for the inconvenience (there is not enough space to host them both here).