In theory, there should be no problem with this, but on the web, all sorts of stuff can fail. The worst thing that can happen is to have a failure cache somewhere. I suspect that this is what has happened to you.
If you could, please clear your browser cache and reload the page. This should take care of the problem. If not, our next release will update the site to jQuery 1.4.4, which will take care of the problem too by forcing a new load of jQuery.
The other thing that may have happened is that somehow you were trying to get to the https version of the page. I recently made a change to load the https version of jQuery in this case to avoid this kind of issue until we finish making the proper redirects out of https.
Let us know how it goes. If there is a bigger problem here, I would like to know about it.
I get this message when loading any forum thread. Not using https either.
edit: nevermind, it seems to have fixed itself.
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