...victorious entry of this posting from the ground up, of course, but when comment attempted on previous Thrillhouse entry, comment window stalled. Refreshing comment window showed an initial comment window as if comment attempt never happened (reversion to last known good state or something?).

OS 10.4.7 Mac

Latest theory: version of relevant scripting language underneath "Post" button conflicts with version on some machine on at least one backbone on this side of city. Probably not an outdated filename request problem, since 404 recieved on at least one OS (XP) but not this particular one.