I've been using the archive calendar for a while now (not sure which version) and have had no problems.... until now.
The date has shifted by one day. Today, Saturday 7th of April 2007 appears as Sunday. I've checked back to ensure that the leap year was recorded OK and it appears to be, so what could be up?
Here's a link to my calendar: http://photoblog.xlv.nu/archivecalendar