As the Fedora package maintainer I got a bug report about a bogofilter crash. See https://bugzilla.redhat.com/show_bug.cgi?id=626131
Hi, original author of that Fedora bogofilter crash bug here,
The database in question is originally from OpenBSD/i386 with bogofilter 1.1.6.
I think I have successfully used the database on OpenBSD/amd64 also, but not sure.
To save time, I simply copied the database from OpenBSD when I started
to use Sylpheed + bogofilter on Fedora 13/x86_64.
So, the crash might be because of some database binary incompatibility between operating systems,
different architectures (32-bit vs 64-bit), or bogofilter versions (1.1 vs 1.2).
Of course, in the optimal case the filter should never crash and instead just report error if it finds invalid database.
As you say, copying the database and changing bogofilter versions should not cause a SIGSEGV. If you still have the message that crashed bogofilter, please post it so that I can try to reproduce and fix the problem.
This was apparently pertinent only in bogofilter 1.2.0 and/or older, and got fixed in 1.2.2, see <https://bugzilla.redhat.com/show_bug.cgi?id=626131#c5>.
Closing this bug.