Comment 4 for bug 384062

I think this problem has nothing to do with any particular PDF but with the re-thumbnailing of partially downloaded files while they are being downloaded (same for videos etc.) - maybe there's a nautilus bug report for the issue, already?
Using a small bandwith download (e.g. with wget --limit-rate or scp -l ) I can at least reproduce evince-thumbnailer springing into action every second or so (although it does not use 100% CPU on my computer).