I'm just doing a little server shuffle and am thus moving the pbooks demo from one server to another. Shouldn't result in any downtime but I figured I'd give a heads up just in case.
Ran into a couple of small glitches - new server hosts some blogs so the default path is /blog/, redirected for livedemo domain. Also set login form to default with username: demo, password: demo. Hope that helps!
For more information about the livedemo, check out the PBooks demo page to find out about what type of server it runs on, plus much more!