Switch to the TTY (CTRL + ALT + F1), login there, and issue this command as root: shutdown -h now
Does it lock immediately? Do you see any diagnostic messages before the system locks up? What is the last thing you see? This info would help in tracing down the problem.
I am working on getting access to the old news portal under a different URL for those that would rather use that for news before we get a different news view.
It is OK though for the main page to open up on the forum in the view it was before. As long as the portal has its own URL so it can be viewed that way I do want to try it as a regular forum view for a while
I switched it to a "Standard" article forum. This will show the thread list like normal, but the threads themselves will have the first post set up above the rest of the "comments"