i have fix the problem with an little script
insert this im /etc/cron.weekly
Code:
#!/bin/bash
cd /full/path/to/phpdig_admin
./cronspider
insert this as cronspider (chown 755) in /full/path/to/phpdig_admin
Code:
/path/to/php/php -f spider.php all >> /var/log/spider.log
a little problem i have, the spider.php hang after some hours (6-15) and i must kill the PID on shell

is it maybe that the spider autorefresh when an time x no working is detecting?