Strange visual problem in 3.11

First of all sorry for my bad english. I have encoded Episode I using GKnot and DivX 3.11. I made it to fit 2*800 Mb cdr's. Quality is great, no doubt but one thing makes me wonder: when it is a still scene and the camera starts move slowly to the left or to the right all the picture (especially it is greatly can be seen on small objects) starts to blur or slower or something like that so that i just cant describe it correctly in english. I wanted to attach the picture but it turned out that its useless and cant help in evaluating the problem. Maybe i have to make some configuration moves in Nundub or in codec settings? Maybe there are some motion or something options that i dont know? I did everything like in GKnot guide is written. Please help.

u mean choppy?

Yeah, you're absolutely right! Choppy is a right word here. So what do I do?

Thanx man! I guess you're right. I'll try do implement your recommendations as soon as it possible. I didnt do IVTC at all - i guess that's my problem.