Save file as .pdf in Adobe Illustrator CS4

I am currently working on Adobe Illustrator CS4. I made a file that contains texts and images. I want to convert it into a pdf file to put editable field. When I save it in a pdf format, and I open it with adobe acrobat reader, the print and frame appears black dotted with white point. What can I do to solve this problem? I try to change the options but nothing helps.

1) Printing with a desktop printer in CMYK not really make sense.
2) If it works in step A, it could work in step B but the problem may lie between the 2.

So your export of pdf should not be done properly. Hence the frame that makes your printer worse. Must be something in the core.

I have a CMYK printer, but I used a laser printer for testing paper and a simple postscript printer for final testing and the result were the same.

I know that at the conversion in pdf there may be a problem but I will try the important settings for pdf imports knowing that I only use Adobe software.

Do you have a lot of black dots and also on the image of your document? What settings/options did you used for pdf export?