Hi I also have motion problems This strange I am sure I have followed Karls instructions to the letter (I think) but when I render all I get is a normal non blured image. My steps are 1) Create a new picture, selected atmoshpere 2) Added a sphere 3) Pressed the animation button and canceled wizard 4) Moved slider 2 sec in time 5) Moved sphere to new position 6) moved time slider back to 1 sec 7) Render in broadcast or ultra mode Should these steps produce a motion blur of the sphere?? On my computer they don't. I would be interested in comments and wether I should be talking to tech-support?? Thanks Neil