Slow Client to Server transfer speeds... Fast Client to Client

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http://serverfault.com – Client : Windows 7 x32 | Dell Latitude E6510, transferring to another identical machine over the network.. 120mbs. Transferring to any server (2003 server, 2008, 2008R2, or VM's) I can not get more than 30MBS. The server is plugged into the same switch and is a physical server. I have jumbo frames and flow control enabled. I do not understand why I am not getting GB speeds but I do transferring to another workstation. Running the LAN Speed test software from client to the server it lags.. It is taking 39 seconds to write 500MB.. What else can I check? I have tried transferring to our new D (HowTos)