Problems with our hardware

Hi all,
i've made some tests using an hardware with these features:

* 2x Intel(R) Xeon(R) CPU E5320 @ 1.86GHz
* 8 GB RAM
* 8x 72GB disks 10000 rpm scsi
* Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet (rev 12)

Bro was configured in this way:

* Pf_ring aware drivers
* Bro 1.4 beta
* 2 workers