On Fri, 27 May 2011, Stefan Kriwanek wrote:

Speedlink VAD Cezanne have a hardware bug that makes the cursor "jump" 
from one place to another every now and then. The issue are relative 
motion events erroneously reported by the device, each having a distance 
value of +256. This 256 can in fact never occur due to real motion, 
therefore those events can safely be ignored. The driver also drops 
useless EV_REL events with a value of 0, that the device sends every 
time it sends an "real" EV_REL or EV_KEY event.

Applied, thank you Stefan.

-- 
Jiri Kosina
SUSE Labs