Asus laptop with a Realtek PCIe GBE Family Controller wired network adapter using Windows 7. It takes 2 hours to copy a 3 gig file over the LAN. (Using the wireless connection is faster at 25 min). I get the same result if I boot to Ubuntu so it is not the OS. Other computers using Windows XP the copy finishes in minutes. It is not the cables. I have downloaded the latest driver.
Here are the control panel advanced settings, the settings are default.
Auto disable Gigabit Energy efficient ethernet Green Ethernet IPv4 Checksum Offload receive buffers Shutdown Wake on LAN Speed and duplex TCP Checksum offload (IPv4) TCP Checksum offload (IPv6) Transmit buffers UDP Checksum offload (IPv4) UDP Checksum offload (IPv6) Wake on Magic Packet Wake on Pattern Match WOL & Shutdown Link Speed
I got access to a network with a win 2003 server and was able to copy files at high speeds with my laptop - so the problem is NOT with my network card at all.
The computer I was trying to copy to on my network is running Windows XP. Other computers on my network running Windows XP can copy OK to each other.
So the new question is: Is there some problem with Windows 7 or Ubuntu copying to Windows XP that would slow down the process drastically?