2003 SP1 Wireless Zero-Config

Hi,
Is anyone else having a problem with UNC file transfer and the zero-config
wireless support provided with SP1 for W2k3Svr?

Here's my situation: I'm using Linksys gear (with their SpeedBooster
technology) for an 802.11G network. The server and a client are connected
using the linksys usb wireless NICs, and I'm using a linksys AP/Router.

The server and the client work fine on the network. I can RDP into the
server console from the client all day long, both boxes can surf the
internet just fine, and could generally be considered to be operating just
fine.

I can also open a folder on the server via UNC and browse the directory
structure. However, the minute I drag a 200MB file (or something that takes
longer than a couple seconds to copy) both boxes fall off the network and
must rediscover and attach to the AP.

I first saw this in RC2 for SP1, and thought it might be a bug in the zero
config or something. Now I've uninstalled RC2 and laid in SP1 gold, and the
problem still exists. BTW, I can ftp the same data to the server without
problems. It seems particular to copying over a UNC in windows explorer.

Has anyone else seen this behavior with SP1? Any ideas on what the problem
might be?

Thanks
Stephen