This is somewhat true but see I'm using a Windows 7 operating system and it works great. I think the biggest issue right now that I can find and will always find is cooling. I put it next to my house fan and it gets double the speed.
On Windows XP it does drop packets but that is because of the software that came with it is balls you have to go online to Alfa's website and get yourself the Windows 7 install.
I bought this product for 30 dollars and its so great. I pick up my grandparents router from 200 feet away pulling a third of what they get but more ping than they get. I bridged the connection and it works great with my Xbox no lag on my end sir just dont expect me to be the server :D