If you suddenly are getting 404 errors from the Streaming API, it's probably because you haven't updated your URLs. See:
http://groups.google.com/group/twitter-development-talk/browse_frm/thread/44bd32155dbf2c16/f085ffb0e64e0709?lnk=gst&q=jkalucki+deprecate#f085ffb0e64e0709 -John Kalucki http://twitter.com/jkalucki Infrastructure, Twitter Inc.
