I figured out the source of the iWeb difficulties that have been interfering with my Choate Tennis intranet site since last spring: essentially it's an issue with the Choate firewall here on campus. So since the middle of last week when I relaunched the site, every time I want to upload changes, I make my way up the street to the Wallingford Public Library to take advantage of its free (and apparently firewall-free) wireless network.