It doesn't lock up. I only had problems trying to scan one of these:
http://www.grandprixforums.net/data:...uqI6K6urqI/9k=http://www.autoevolution.com/images/...-2006_main.jpg
But I also couldn't scan it with the PC applications or with the powrtuner. I think those may not be OBDII they are called Nissan platina here, but it's actually a Renault clio turned into a sedan with nissan badges. That time torque wouldn't say it wasn't supported or couldn't connect, it would just crash.
My ebay adaptor randomly stops transmitting and then it starts again btw.