"lazy movements..."
 

When I change view from 4 to 1 (0 key) and move the object, it's movement isn't smooth, but stepwise. Moving points is also slow and stepping. Same problem with Bandsaw Pro (very slow. Do I have a too slow CPU (Celeron 1,2G) or to little RAM (512) or what? It's frustrating and make tweeking difficult. Can anyone give me an advice?

Are you by any chance running any programs in the background that are RAM thirsy? I know i usually listen to music and i have Norton running in the background.

It also could be a wierd OpenGL bug. I found that LW7.5 under an older version of the nVidia drivers used to exhibit similar behaviour. I also used to find that moving back from single to 4 viewports used to completely remove their contents until I actually panned one of them.

So, I'd suggest maybe updating your video drivers first...