Hi
My laptop will not connect at full speed whilst on a wired connection.
All my other laptops connect at full gigabit speed OK using the same cable.
My XPS will only connect at 100Mbps.
I have the Realtek PCIe GBE Family Controller.
I am using Win 7 64Bit but I have also tried Ubuntu 12 with the same result.
Is this a known problem ?
I think this may have been like this since new,
My most expensive laptop is the slowest 
on my network.
Thanks in anticipation.