One of my customerq just bought a new Dell 2950. The setup was succesful and everything seemed to ran perfectly ... except network perfmormances. Copying a file from this server to another one was very slow. After some search I finally found what did cause the issue : TOE (TCP Offload Engine). The purpose of TOE is to give some processing work to a chipset on the network card instead of using CPU cycles from the computer. In this case disabling the TOE gave me good network transfers.
How did I disable the TOE ? With the following Windows command netsh int ip set chimney disabled
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