So, I just noticed: copying to the plug from a Windows box, I'm getting about 25-30 megabytes a second. Copying from the plug to the Windows box, I'm getting 2-3 megabytes a second.
I've tried two Windows boxes, one Vista and the other Windows 7. I've tried both Samba and SCP. I'm on a gig lan.
OK, I'm going to go Google.
my speed is primarily limited by USB. ftp a 1.5G from Linux-PC to the plug's /dev/null gives me 40MBytes/s. ftp from the plug's tmpfs to Linux-PC gives me 53MBytes/s.