There are several ways to disable that functionality in FreeBSD:
You can disable them via:
- Login classes (See login.conf(5)).
- 'ulimit -c 0' with bourne shells, 'limit coredumpsize 0' in csh.
- sysctl kern.coredump = 0, kern.sugid_coredump = 0 for setuid bins.
Note: It's probably better to leave them enabled, perhaps, debugging the problem and sending it upstream.. but - we don't live in a perfect world.