ZDNet's George Ou looks at the range of Draft N products out there, and finds that they're impressively effective at blocking traditional 802.11b/g Wi-Fi.

"Introducing Draft N and Pre-N Wi-Fi!" Ou writes. "They might not interoperate at high speeds with each other but they're FCC legal and they're guaranteed to shut your neighbor down or your money back!"

Ou links to a series of tests run by Tim Higgins, and notes, "While Airgo's third generation product achieves record breaking throughput, it annihilates any legacy 802.11b/g product in the vicinity and effectively shuts them down. The other products from Broadcom and Marvell weren't quite as devastating to the neighbors, but the damage is still severe. What's crazy is that these products are FCC legal and are being sold on store shelves today."

In short , it's a mess -- it'll be interesting to see how these companies resolve their issues (or fail to do so) as 802.11n moves forward.