I jut got an old dinosaur of a computer to work again so I installed the EC for $h@#s & giggles. The computer is about ten years old and only has 512k memory. It's a sad little computer Anyway, while trying to use the EC on this thing I finally see what people are complaining about when they mention "choppiness" and "motion sickness" If your computer can't run the EC properly there is definite motion sickness. It's the weirdest thing I've ever experienced on a computer. This disappoints me greatly because lots of people are missing out on what I think is a really good interface that can only get better as time marches on. I hope the people who have experienced all this stuff don't write it off as normal and assume the EC is a hunk of junk. I hope if ever they can upgrade their equipment that they give the EC just one more chance because on a computer that can handle it, it is quite stable and fluid.