Hmmm! Maybe it could be my Video Card making this error! Try and see the 'error' it performs everytime i use the 'paint-brush' tool. Making this odd trail following the cursor......! Look at the screenshot i have posted, and see f.eks. what it does when i am using the 'sculpt surface tool.' ps. Do u know how to delete the preferences? pps. How will u make a straw bend in the wind, using dynamic fields on geometry ( Not fur )