Distiller causing rough EPS in PDF

[Michael_J_Graham@adobeforums.com]

I am using Distiller 5 (in Classic) and QuarkXPress 6.5 in OS 10.3.8.
When I make a high resolution PDF (PressOptimised - printing to a Postscript file from Illustrator, using the "AcrobatDistiller on Localhost" method, and sending the file to a watched folder), EPS illustrations (ie. Logos), which were created in Adobe Illustrator, always come out with 'jagged' edges - very rough and unuseable for printing from.
When I make a lower res PDF (ScreenOptimised) using the same Quark file, the problem has gone!
What setting is causing this? I don't have the time to mess around with all of the different possible variations. Does someone out there know the answer?
A thousand thanks, if you can help me!!

[MikeKazlow@adobeforums.com]

What version of Illustrator? Recent versions of Illustrator support
saving as pdf.

Mike

[Jon_Bessant@adobeforums.com]

Hit COMMAND-D - what is the 'PDF Producer' - also, check the
preferences, do you have SMOOTH LINE ART selected?

Jon

[Michael_J_Graham@adobeforums.com]

The PDF Producer is: Acrobat 5.0.5 Distiller for Macintosh
The effect on the Illustrator logo is like a really bad clipping path in Photoshop - instead of smooth curves around letters, the edges are wavy and made up of irregular short lines that don't follow the line of the true curve.
I'm trying a test, by turning off all the possible settings I can, one by one, and making a test PDF, to see if I can find the one setting that is causing the problem...