Problem with Intel(R) PRO/1000 card initialization

[Android Andrew]

Hello!

I have a problem with Intel(R) PRO/1000 card (Intel 82540) - it does not 
  initialize properly during boot process.

I've got these error messages in /var/log/messages:
...
Dec 16 19:27:36 zahrouer kernel: pci2: <PCI bus> on pcib2
Dec 16 19:27:36 zahrouer kernel: em0: <Intel(R) PRO/1000 Network 
Connection, Version - 1.7.35> port 0xb000-0xb03f mem 0xe2000000-0xe201ffff i
rq 21 at device 5.0 on pci2
Dec 16 19:27:36 zahrouer kernel: em0: The EEPROM Checksum Is Not Valid
Dec 16 19:27:36 zahrouer kernel: em0: Unable to initialize the hardware
Dec 16 19:27:36 zahrouer kernel: device_attach: em0 attach returned 5
...

My system is "5.3-STABLE FreeBSD 5.3-STABLE #0: Thu Dec 16 15:10:36 CET 
2004  i386"
Motherboard is with i845 chipset.

My kernel configuration file does not contain "device cbb".
I've tried to disable ACPI option in BIOS, but it does not solve this 
problem.

Do you have any ideas about this?

Thanks!