> Could it be robots.txt?This is what i found in my
> file log.

Ah yes, now that you've posted the log it's obvious (to me).  The /media/
folder is being blocked and that contains a lot of the images and PDFs.

Turn off robots.txt with Options >> Spider >> Spider: "No robots.txt rules"

but please be kind to their server by setting limits (speed, connections) like
I mentioned previously.