Sorting a problem on my website

My website www.lifeafterlondon.com has BBPress forums and I have a problem with one. I need to get it sorted - it might be BB Press or it might be a CSS problem so I need someone who can understand both and help me as easily as possible solve the problem on this one thread. the page shows all the chat on this link but all squashed up http://lifeafterlondon.com/topic/property-finders/page/2/#post-3950 but on the main link it has cut off some of the comments and I can't work out why. http://lifeafterlondon.com/topic/property-finders/