My guess is that you have a 100mb crossover cable and/or the nic in your host is only negotiating at 100mb. make sure you have a gigabit switch and not just a fast Ethernet switch. If you do not have a gigabit crossover check this link on how to make one. http://logout.sh/computers/net/gigabit/. When you said you are only getting the 9.1MB/sec rates that is the full throughput of 100mb Ethernet. expect 80-90MB/sec for gigabit.