I was trying to post a comment on Eric's Hallowe'en card topic, and the "timed out" message appeared behind the processing icon.
The page then switched to:
All my usual routes into the site (bookmarks, typing it in, history) gave the same message.403 Forbidden
Request forbidden by administrative rules.
The "fault" only lasted a couple of minutes, but could it be symptomatic of something worse?
No, I haven't broken the internet again.