pkgin: SQL error: callback requested query abort (was: Updating both Perl and Perl Modules from a binary repository)

[Edgar Fuß <ef%math.uni-bonn.de@localhost>]

> pkgin can normally handle this.
Looks quite promising. Indded, on one of two identical servers, it seems to 
work, on the other one, I fail to add "keepable" packages.

No error messages. But ktrace reveals:
        SQL error: callback requested query abort
I'm totally stuck with this. update and avail work, keep does nothing, 
show-keep and upgrade say "no keepable packages".