I have a Logitech Laser cordless mouse which I like.
However occasionally it goes slow. Usually after a re-boot (XP).
It is not the batteries, because I usually have to connect up my old wired mouse for a few days. Then when I try to plug in my Logitech cordless mouse and re-boot if quite often works perfectly again.
I have checked Logitechs help files but nothing covers this situation.