* Tong Sun wrote in grml's BTS on 20100727 / 05:38:

> Ok, realized that I've draw the conclusion too soon.

> > real cause: obsoleted package name in my class file.

> no, it's actually irrelevant. The actual reason is,

> fai failed due to aptitude refusing to install packages from "untrusted" source
[...]

Set FAI_ALLOW_UNSIGNED to 1 in /etc/grml/fai/config/class/*.var
or use

| package_config/
| Files with class names contain lists of software packages to be
| installed or removed. Files named *.asc are added to the key list of
| apt.

as documented on
http://www.informatik.uni-koeln.de/fai/fai-guide/ar01s07.html

Closing the bugreport.

regards,
-mika-