IE9 problem with Twitter's user_timeline code

Is anyone else seeing problems with picking up a Twitter feed and displaying it on their pages in IE9? I’m sure this was working on sites of mine when they were tested in IE9 some time ago.

Now there are no tweets appearing in IE9 when using http://twitter.com/statuses/user_timeline code and I wonder if Twitter has recently changed their code. It works OK in all other browsers including IE7 and IE8. Here’s a link to one of the sites affected … http://www.elva.com. I’ve tried some other people’s sites in IE9 and the same problem is there, so its not just my code/sites.

Using IE9 developer tools I can see this error …
SEC7112: Script from [NOPARSE]http://twitter.com/statuses/user_timeline/******.json?callback=twitterCallback2&count=1[/NOPARSE] was blocked due to mime type mismatch

Is the JSON feed returning

header("Content-Type: application/json");

I checked out two and included in the HTTP headers they send are

Server: hi
Content-Type: application/json; charset=utf-8

I’m wondering if “hi” means “high anonymous proxy”?
They also set cookies.

The Content-Type header is good, maybe it’s a security setting somewhere?

Off Topic:

lighting photography photo light

I’ve checked the IE9 security settings and cookies were being blocked due to the settings. I’ve now explicitly allowed cookies for this domain and for twitter.com but it doesn’t make any difference. No cookie is actually being stored. I suspect that the twitter.com script isn’t actually running far enough to even set a cookie. The IE9 Developer Tools (F12) window just displays the SEC7112 originally mentioned above.

I did some Googling and found https://dev.twitter.com/discussions/1232
It seems IE9 wants JSON-P to have the Content-Type application/javascript because the callback is a function as opposed to a string

Off Topic:

lighting photography photo light

Thanks for finding that thread. It didn’t come up in my Google searches a day or so ago. Encouraging that a fix is going to be available soon it seems.