Need help troubleshooting CSS issues in BP-corporate

When I installed BP-Corporate, it messed something up in my forums and I can't seem to figure out what the problem is.

I'm using the Global Forums plugin from BuddyDev

Here's the problem: On an initial post everything works fine. As soon as someone replies to that post, the links no longer work and the text is no longer selectable in the first post. Subsequent posts have the same problem.

I'm noticing that the bottom border line is moved around on subsequent posts. This is a conflict between the css code from BP-Corporate and the CSS code from the forums, but I can't pin it down. I've been through this with Firebug and tinkered away at it, but nothing I do seems to change anything.

Can someone take look and give me some ideas?

http://teatra.de/talk/topic/purple-tea-from-kenja/