I'm trying to upgrade from ESX 4.0 to ESX 4.1 U1 on a HP BL460c G6. The install works fine but there is no network connectivity after configuring the IP address. I've upgraded the firmware to the latest on the chassis OA card, server BIOS, server NIC, and the Flex-10 Enet Module and have used the HP flavor of the ESXi 4.1 install CD as well as VMware's. The only difference between my issue and other postings is that I have HP 1Gb Ethernet Pass-Thru Modules in bays 1 and 2. The Flex-10 Enet Module has been installed in bay 5 for ILO2 access. Any one have any ideas on what to try next?