I just bought a new computer and with it I purchased Adobe Acrobat Version 9 Standard. In the past I used previous version of Acrobat standard and professional to create drawings and to copy and paste my engineering seal on my structural calculations. I am having (2) problems. The first is when I try to copy and paste my seal from a PDF file, it does not work in Version 9. I use the snap shot tool. Please try the attached file using Version 9. It works in Version 8 Standard and Version 7 professional.
The second is when I try to printing from AutoDesk products. I had the problem of when I would print a PDF from AutoCAD it would sooo big. To work around that, I started using Autodesk Reviewer and creating my PDFs from an Autodesk DWF file. WIth Version 9, I now having the file size problem with the DWF files. It is about 5 times larger than the DWF and the qualtiy is terrible. I was able to create a PDF from a DWF from Version 7 and 8 without these problems.
On the second problem, how are you creating the PDF from DWF - printing to Adobe PDF printer from AutoDesk software?
Acrobat Professional provides a way to convert DWG/DWF to PDF which are richer in quality and smaller in size. You might want to take the trial version and see if that works for you.
It has been a part of Acrobat for a while now but DWF was added in Acrobat 8, I believe. As far as older versions are concerned, the version of AutoCAD you have matters. See: http://blogs.adobe.com/pdfitmatters/2008/12/version_compatibility_of_a crob.html. In addition, AutoCAD 2009 is supported in Acrobat 9.1.
I would recommend downloading a trial copy of Acrobat and see if it meets your requirements.