It would seem that DNS isn't quite aware of his domain name... If I force software.kawseq.com to go to the IP of www.kawseq.com (208.77.100.199), using my hosts file, I can get to his repository. I've mirrored the relevant page of his repository at http://dl.getdropbox.com/u/46230/seqretary/index.htm . I'll take it down if he asks me to, or if DNS updates.

[edit]I like it! It's a nice calendar and seems to have plenty of features. Zooming in and out works exactly as I would expect. If only it would synchronize with Google calendar...