Ah… I was using 32-bit Win7. I have a 64-bit Win7 box, though, so I'll try and see what results I get there, as time tonight allows.
If you can, you might try using a different computer (with a different OS). That way, we may be able to narrow the possible causes down. It could be a problem with the 64-bit drivers or with the USB chipset. If you can provide any additional details of your computer (make, model, service pack, chipset, etc.), that may help, too.
