It should include image & logos when you save as PDF form, and its layout is same as in the page view mode. You can access the page view mode by selecting it in the lower right corner of the UI. Here’s more details in the link: http://forums.adobe.com/docs/DOC-2655 And also you can insert image in the form design tab.
Try a different image and see if it works. There might be some issues with the image you are using.