I'm now on a new hoster. Hopefully the name servers will kick in for most of you and
http://willus.com/k2pdfopt/ will work again. Unfortunately, it will be 18 months out of date, corresponding to my last full site backup. But it's better than nothing, and I have uploaded the v2.03 binaries. I will restore it as I have time (or if my old hoster can restore my files), but please be patient.