Fast Mac write speeds, slow XP write speeds

Just got a new 1Tb TC and it works great on both my Macs and my one XP gaming rig except for one flaw, the XP box (with Gigabit ethernet) is painfully slow writing to the TC disk. A 40Mb file took more than five minutes to write on XP while a 700Mb file took under a minute on the Mac side. I thought it might have something to do with the file system setup on the TC, but when I look at the disk properties in Explorer it shows up as a Fat32 drive. I know almost nothing about networking Windows machines, so I'm forced to think it has something to do with that, can anyone point me in the right direction?

Same problem except add slow read times to XP as well.
I had hoped to us the TC as a media store for a combination of XP, Leopard, and Xbox devices.
Happy with how the backups are working but very disappointed that the TC doesn't seem to be able to serve 3MB music files to XP in under a couple minutes.
Seems like a bug and is ridiculous. Apple a quick firmware fix please!!!

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