Hey Rick, I've had the same problem a few times in the past, but it always seems to take care of it's self. I couldn't even get to the board through my favorites...had to google. Can you Google the step board??????
Hope it starts working for you soon.Have a great sober day.
Because each page linked to on the main page at http://www.12stepforums.net opens in a separate window, it could be that you are using a "popup" blocker, that is detecting the new page opening as a popup and not allowing it to open.
Most popup blocker programs have a Allow or Permission feature where you can give it permission to open popups from a specified page. You might want to do this with the main page at http://www.12stepforums.net if the problem is your popup blocker program.
I check all the links on a regular basis, and have software that checks it daily and haven't had any problems revealed in a very long time, so I venture to say the problem is somewhere on your end, if it isn't a popup blocker or spam ware program causing it to happen to you.