A really nice article covering why you should always take notes in an accompanied surfing session, regardless of the technology you're using. The author introduces the idea of datalogging and why it's a better approach than plain old notetaking.
The article goes on to comment on a range of tools out there that can help you, and there's a free excel spreadsheet template to download should you wish to move on from pencil and paper.
I think the subtitle: "How I learned to stop wasting my time in usability tests" says it all...
Log usability tests like a pro - article by David Travis for userfocus.co.uk