The graphic icon for "new post" seems to be broken, and has been for some time. I see the source is looking for the following:
http://www.indie-rpgs.com/forum/Themes/oxygen/images/post/.gif
I assume there's a file name missing there where it says ".gif"?
Along similar lines, I only see broken icons for all the posts inside forums (whatever's suppposed to be on the left-hand margin. I don't think that was the case when the site first switched over to the new software, but it is now.
Aaron