Problem with gradients in Indesign

[Elaine_Pawski@adobeforums.com]

I'm running Adobe CS2, Indesign CS2, version 4.0.4, MAC OS10.4, on a mirror door G4, dual 1 gig processor with 2 gigs of ram.
When I place art or a shape over a gradient in indesign, and then create a PDF, the outlines of the bounding boxes around the art and some of the shapes will show as fine white lines on screen. When I print from the PDF, the lines are gone, but the gradient doesn't print correctly.
Is there a known bug with the gradients in indesign?
Thanks.

[Bjorn_Ost@adobeforums.com]

The thin lines are known as "stitching", and become visible when a program antialias the edges of flattened regions of your page. Turn smoothing of lineart off in acrobat to make them vanish. This should not turn up in print unless the rip also tries some fancy antialiasing.

For problems using gradients involved in transparency, the cause is usually the use of spot colors instead of process. If you really are going to print using spots, the device outputting your job must be capable of correct overprinting.

For a desktop printer, you could probably turn on "simulate overprint" to make it come out ok. If the job is going to be print in normal 4 color, redo the gradient using process colors.