...it seems to be down, though there is a mirror site at toarchive.org. The Talk Origins Archive has frequently (and not surprisingly) been the target of creationist malice over the years. It's faced numerous DDOS attacks; someone hacked it and placed some code on it forwarding visitors to a pornographic site, which got TO delisted from Google for a while; you name it. No idea what's going on this time, though, but at least the site is still online in its complete form, just at a different URL. Adjust your bookmarks accordingly.