If you view this post in Opera, you will notice that the text after the quoted text is larger than it's supposed to be. Someone who uses Opera on my boards pointed it out to me. I came to your boards here (which I assume has all the latest bug fixes installed), and noticed that you too are showing the same bug.
Is this known? Are you supporting Opera? I was looking through the code to find a possible solution, but my ASP knowledge is pretty nill.
I believe Opera 6 has a bug that displays the wrong font size. I don't know if they have a fix for it yet, but make sure you have the latest release of Opera 6. If you're not using Opera 6, then I don't know what to tell you.
there are a few cosmetic flaw when viewing the forum with Opera, but the same holds true for a lot of the forums (other than Snitz) that I have visited. I'm hoping v7 will correct a lot of these issues because I am growing more and more fond of Opera.