High CPU usage for "sa-learn"

[SalvadorS]

Hello,

I have a server, Debian 7, Plesk 11.5 and from time to time sa-learn process start and the cpu of the server goes to nearly 100%

I found this KB article http://kb.odin.com/en/124060

But I don´t have any files called sa-update and spamassassin on /etc/cron.daily/ folder. So in this case the KB is wrong.

I have that files in /usr/bin folder. I don´t know if I have to rename from that folder...

Thanks for helping