Currently Being ModeratedNov 7, 2012 6:00 AM (in response to Vikti)
I had the same problems as you do. The machine is a little different (mbp pro 2011) but i do not think that it matters. I am also using Bootcamp and Windows 7.
I solve the problem by finding and download a newer version of my network card drivers (i have a Broadcom NeXtreme Gigabit Ethernet card).
When i did that, network performance came back to normal.