I am having a real problem making adequate "lo res" pdf files from quark 6 and although I have about 4 different methods, none of them are what I got from quark 5, using OS 9. Depending on the method I use (export to pdf, save as pdf, save as ps, or save file as pdf) the files are either too large, bad quality, too many steps, takes too long, paper size does not match up...the list goes on. When I was on my old G4 with OS9.2 I was able to use the Adobe PS print driver and I made great "ebook" lo res(but not crappy lo res), small files. It worked great for printing proofs quickly. Since Adobe PS doesn't offer support for OSX (look on Adobe website under Support Knowledge Document 326968) we all have to find a different way to make a pdf...which works, but not as well as how it did before.
I've been trying to research this when I have the time to see if anyone else has a better solution but nothing so far. I'm not an expert at all but I feel as though I've tried everything. Very frustrating.