I have a kinzu since June and I never had any problem mate.
probably it's something wrong with your USB port?
RMA it if it keeps on doing having problems.
Same problems here, it has so much bugs. They still didn't release any firmware update, also to dissapear mouse acceleration.
To be honest, I can't play with it because I have fast reflexes, and the mice goes too fast. I tried everything just to fix it, changed everything in drivers, but still problems. Anyway, I'm playing again with my old 1.1 ...Waiting for any update from SteelSeries...
i had the same problem with my kinzu.i think it is a problem of the mouse cable.i just bought a new mouse and i trade the mouses and i send my hold mouse to the warranty.xD
forest and markeloff and alex (tyloo) play well on it :p
maybe a bad unit
I had this problem with my mx518. It freezes for like 0.1 sec.
edit: Didn't found a solution, my wired burned off.