Spamd child process by root overload my CPU. I kill them and CPU usage go down but after few hours they still run and server load grow up to red.

Any ideas?

Thank you

make sure spamassasin is upto date.

/scripts/upcp --force should make sure of that

Theres also a few other scripts in /scripts to fix various problems with spamassasin. If not you could always disable it.