This night I updated system to know better the problem, I know it is a CRON problem that launch sometimes several times the process, too difficult to me explain it in english, but without changes since this month it works mad .
I tried restore database and run manually but in the server I have to use CRON ( program to launch scripts) and it makes the same problems sometimes.
I don't have more time now, I have to go at job.
This evening I will continue with this issue, I will restore database again.
Sorry.