When quoting an earlier message there seems to be a bug with unmatched tags. At least the tag P seems to cause this. I noticed this when quoting Wil. You seem to start with P a lot but sometimes don't close it which in html is a legal move if I remember correctly. This forumcode however screws it up. Try quoting some of your new messages and write something in between your quoted message and in the end. Preview shows that the forum engine doesn't understand the new ending part and instead puts it inside the quote.
Here is how it renders it when p is closed:
I'm fine.
Buggy example [quote 1][p]Hello[/quote]Hello[quote 1][p]How are you doing?[/quote]I'm fine.
And here is how it renders it:
asarkila
gmail.com
Thu Mar 24, 2005 5:48 am Post subject: Quote bug