We'll be making some software upgrades tomorrow morning. The site will be down in the early morning (starting around 7:00am - 7:30am) and will hopefully be done in about 30 minutes. If it lasts longer than that, though, please be patient with us; we'll get things going as soon as possible.
With any software change, there could be some bugs. If you notice any, please report them in the Using CelticsBlog forum.