Having the same problem during the past few weeks after upgrade to IE9. It's making me crazy! Hope we can resolve this soon.

In my case here is a copy of the shortcut from MyFlyertalk that has this problem:
http://www.flyertalk.com/forum/trave...-new-post.html

I am unable to determine if I have this with only some or all threads.

The problem appears to be like this:
- subscribed thread with new posts shows up in MyFlyertalk
- I click the "go to first new post" button
- thread opens up and I am taken to post number 123 (for example).
- I mark the thread as read and then it disappears from MyFlyertalk subscribed posts
- Somebody posts a new message in that thread
- thread re-appears in MyFlyertalk
- clicking on "go to first new post" takes me to post number 123 instead of the actual new post.

So now I have a situation on fast moving threads where clicking "go to first new post" will actually take me to some post that is even a few pages before the actual new post. (And I need to manually find where the new posts start).

Thaks
Ron