Linksys does this all the time, and it's one of the reasons I tend to also skip considering them for much of anything. I still remember helping a friend load Windows 2000 on his machine with a Linksys network card. There were 6 versions of the card, sharing the same model number. Each one had different drivers, and in most cases loading the wrong one would bluescreen the machine.

This taught me way back then that their push to drive down cost was going to drive up my time having to deal with supporting the products.

I had figured they might have improved after being acquired by Cisco, and so I bought a 610N when Circuit City imploded. 3 weeks later I replaced it with an Airport Extreme.