Does IE9 have some sort of IE8 or other compatibility setting/option? If not, can you install and run either Firefox or Chrome?

Linux.com forums seem to be running Ninjaboard (see the source). I found this link which seems to confirm the issue.

http://ninjaforge.com/component/ninjaboard/topic/24850-internet-explorer-9

"Anti-Microsoft comments are NOT welcome."
No one here, will do that. Do not WORRY .People here are Professionals.

"Using alternatives to IE9, or changing the default settings, is not an option.

As all webdesigners know, sites simply have to work with what people have... "

yes , no doubt in that. But, the point might be, the site has some small stability issue after some changes made due to security breach in kernel.org. So, just want to check whether site is up or not, you might be asked to use other browsers.

And, now to check with your issue, I am typing this message, and sent you one private message through IE9 in Windows-7.
And I dont have anything in my mind right now to start a forum topic. If I get one I will post through IE9 and will let you to know.

Have a very good day