The 10BaseT speeds are with Parallels Tools installed. What speeds are you getting?
EDIT:
I just looked up the specs for the RTL8029 NIC that Parallels emulates. It's a 10BaseT card and therefore has a speed of only 10Mbps with potential for twice that speed using full-duplex mode. The only way to speed things up is if Parallels decides to emulate a faster card, hopefully a gigabit card or chipset.
Last edited: Sep 20, 2006