I actually really like it, more than the sports site as far as visual appeal. Anyways, here's a few things to consider changing. The logo at the top looks good, but the dropshadow touches the top of "TB.com" so I would add another 5-10px of padding. Also around the logo the brown has a sharp edge which looks good, I would continue this around the rest of it. I would then move "forum : blogs : groups : portal" up into the brown top area. Then delete "TB.com" so the news box is level with the log in box. Where the "forum : blogs : groups : portal" is at now could be used for some type of sub-navigation or maybe a few of the most popular forums? I would just keep the fontsize a lot smaller. Even if you move "forum : blogs : groups : portal" into the top brown area I would still make it a little smaller.
Moving on to the forum...the gray color for threads/posts like (5/42) needs a little more contrast, it's a little hard to see. Get rid of
http://theologyboards.com/images/buttons/lastpost.gif or atleast do hue/sat so it matches. Add about 4-5px of padding on the top of the forum images like
http://theologyboards.com/images/misc/forum_buddha.png so that it lines up with the line height of the first line of the description text.
The icon
http://theologyboards.com/images/sta.../forum_old.gif was hard for me to figure out, I actually thought it was some type of flower at first and then realized it's the same TB logo...maybe more contrast, or maybe I'm just tired? The forum_new icon looks good though.
Lastly I'm not a big fan of the red/orange envelopes for the thread icons, both the colors and the actual icon. The icons are a lower level of quality than the rest of the imagery and the colors should maybe be another green/brown?
oh, and don't forget the fav icon.