Negative Positive
Title: Unreliable piece of junk
Review: I can easily use either a trackball or a mouse, but prefer a trackball because I have large hands and the trackball gives me greater control and sensitivity in both my work and my personal computer usage. The Kensington USB trackball seemed ideal, as the ball is larger than usual. I used the trackball continually for a year after I bought it, being careful to clean it regularly. Today, for no apparent reason, the trackball stopped working reliably -- sometimes not working at all and sometimes giving bizarre responses to my attempted use. Rebooting my computer, cleaning the trackball, reseating the cable, and all my other attempts to make it work were no help.
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