I just installed IE9, and just for the heck of it, tried it on this BBS. I got the following behavior:

- Reach BBS home page.
- Press LOG IN link.
- Enter my credentials.
- Credential entry successful. Main BBS page shows me logged in.
- Ctrl-click on a forum to get the forum to open in a new tab.
- In that new tab, Ctrl-click on several new/unread threads within that tab to make more new tabs, one for each thread.
- In each thread tab, read them.
- Go to reply to one of them.
- Realize that I'm not logged in and can't reply on that tab.

Anyone else see that behavior in IE9?