Definitely way too slow. You will have to look at each component, cables, adapters, switches/routers, and drivers. Also take a look at the storage device on each end to see if it is working well.
I usually use LANSpeedTest ( http://www.totusoft.com/lanspeed1.html
) and get around 820-830Mbps on my gigabit network from any machine to any other (all machines have SSDs, or large RAID 5 or 6 arrays with large sequential files, so the network is the limit in transfer speeds).