Instruct: Classify the given Amazon review as either positive or negative.
Query: Good idea, poor execution.

I purchased two of these when they first came out. The retractable cord was great, but I have found two problems with these mice. On one of the mice the retractor mechanism broke. Now, my other one is fine, and I will probably chalk it up to my fater being a bit too rough on it. The other problem is much more annoying, and is present on BOTH of my mice. The problem is with the scroll wheel. The wheel has a tendency to "stick" between knotches causing the screen to jump up and down erratically. It is very difficult to use the wheel without this problem popping up. I have never had this problem with "quality" scroll mice, only cheap ones. I think Kensington cut corners on it's design. On the other hand, their WIRELESS Pocketmouse resolved both of my issues and is a FANTASTIC mouse.