Fotiman - 1:39 pm on Mar 30, 2011 (gmt 0)

I just tried the "GET" example with Firefox 4, and in my testing Firefox was NOT fetching a new version. The NET tab of Firebug showed that the request had a 200 OK status, however, by using Wireshark to watch the actual traffic, I was able to see that the request was not actually going out to the server. In other words, it was using the cached version.