There appears to be problems with the Logitech MX 1000 mouse. Apparently,
numerous people have had issues with the Logitech MX 1000 causing the cursor
to jump improperly. If you go to
http://www.lawyersandsettlements.com/case/logitech there is information on
what you can do about it. There is also a free case evaluation that may be
of help to some.

kr0