XFA pdf filesize grows...

Hi all
I have a pdf containing some small jpgs (18pcs 4-20Kb) and some subforms (29pcs). Forms is contracted at the beginning. Its very dynamic, where i can click a header to expand/hide a product view in child subform.
The size of the is very big:
PCordning_form_V3_9.xdp = 378 kb
PCordning_form_V3_9.pdf = 676 kb
when i fill out the pdf and save, I show 2 product subforms with small jpgs, the size grows to 1.544 kb. I do not embed fonts or images, so I think it is strange!!!
- Anyone know why it grows so much??
- Any tricks to make it grow less??
- Why isn't the pdf format more efficient. I know its xml based, but normally the xdp design is (almost) allways bigger than the saved dynamic pdf, so I am a little puzzled.. ideas are very welcome ;)
== setup ==
Designer 7.1, Acrobat 7.0 Pro
/Thomas Groenbaek
Jyske Bank / Denmark

Actually I recommend validating the level of the graphics necessary as the first step to reduce your output file size, that is usually the problem and the place to look first and the smartest solution since you pay a heavy price for over jealous attributes of graphics. As far as the PDF output compression option, I believe it is under the PDF print type group of options but I am sure there is documentation on the PDF print options available either in Documaker Studio help and/or in online documentation.

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