Given an Amazon review, indicate whether it is a 'Positive Review' or 'Negative Review'.

I had one of the original Kensingon trackballs in the early 90s and loved it. It was smooth, comfortable, and precise, but it broke a lot. I bought a supply of replacement microswitches and kept replacing them, but ultimately I couldn't use it, but don't remember exactly why. I think either the DIN-to-USB interface didn't work, or it was incompatible with Windows 2000 or something.<br /><br />Anyway, I was hopeful when I found this trackball, but it was too exspensive. Lately on sale for around $[...] after rebate, I bought one.<br /><br />Installation went smoothly, but that was the last \\"smooth\\" thing about it. The scroll ring jumps along in about 1/4\\" increments, making it unusable. There's no way to adjust the pointer variables to allow smooth tiny increments and speedy large ones. The toggle to slow down the pointer movement doesn't work when using the pointer on the scroll bar. The list goes on and on. If you unplug from one USB port and plug into another, all your settings disappear, but that may be as designed.<br /><br />It may be a software issue -- the old Mouseworks package has been replaced with TrackballWorks, now at V1.0.4. I can't find anything like the Preferences XML file that you could tweak with Mouseworks, but there may be something in the Registry.<br /><br />All in all very disappointing. Back it goes.<br /><br />Update: Back it went, replaced with a new one by Kensington. The new one wasn't any better, and Kensington support said that was as good as it was going to get. I tried to make it work for aa couple more weeks, but ultimately gave up and returned it for a refund.
Negative Review