So we got a shipment of Dell Poweredge SC440’s in and I installed CentOS 4.4 on them only to find out the NIC stops working once you do so. By default the kernel installed is 2.6.9-42.ELsmp. Come to find this kernel does not work well with the BroadCom BCM5754. To fix this you need to download the 2.6.9-55.EL kernel. Install that RPM, edit the grub menu.lst and reboot. From there you can do a yum update and be on your way. If you don’t feel like doing this you can download the CentOS 4.5 iso’s and that will work as well. Stupid Dell changing up their hardware all the time.