Windows 7 and Virtualisation
Just thought I'd share this as it's caused me a headache on my new Win 7 x64 PC.
I use virtualisation and have an XP Guest - the file transfer between the Host and Guest was totally abysmal - unusable in many cases.
After sniffing around online I found out the following:
If you disable 'Large Send Offload v2' for both IPv4 and IPv6 on your network adapter (under properties -> advanced) it should speed up the access between Windows 7 Host and XP Guest.
This worked for me wonderfully - it may also need it on other virtualisation platforms or to other OS guests. It seems if your host is XP it's not an issue.
Hope this helps someone,