Inline PDF Bug in Safari 1.3 (Mac OS X 10.3.9)
When referencing a pdf inline in a html page with something like: <img src="/terminal.pdf" /> and provided that you have either a.) installed Acrobat Reader 7 with the PDF Internet Plugin or b.) enabled in System Preferences / QuickTime the display of PDFs (in "Mime Types"), you should see the PDF rendered on the page. Just like a JPEG. Try it here.
This worked in Safari up to and including OS 10.3.8 and (so I hear) works again in Safari in 10.4. There seems to be a genuine bug. The PDF is loaded (as one can see from the "Activity" window), but it is not displayed.
When you click and drag inside the window area, the PDF appears and moves around under the mouse. Control click on the blank area where the PDF would be, and choose "Open Image in new Window". In the newly opened window the PDF is properly displayed. So, the problem is only with PDFs displayed inline, in img tags.