We have a Dell PowerEdge T110 II running Win 2008 SP1 with a Broadcom NetXtreme Gigabit Ethernet Card. The machine hosts our phone system management software (Shoretel) and sits on it's own VLAN.
After a power failure last night, the machine now stops being able to see / ping the native VLAN approximately every 30 or so minutes. It can still ping everything on it's own VLAN just fine.
I updated the NIC driver, but no luck.