I do like the one little one though. It is perfect. If the big one were back to separate the posts that would be cool too or don't, I don't care either way.
See how the user name and avatar box have a very light gray background? A bar of about that color running between each post would be nice, something about in-line with the little "New" marker over on the right side. That might be more of a gentle separation than just a stark, black line running across.
... But I do see a difference, both in FireFox on my Linux-computer at home, as in InternetExplorer on Windows at work: The line above the signature has changed, and the line between posts has vannished.
Epic fail on my part as i had two css clashing and well they are gone now lol. Should be fine now as I am marking this thread as solved. But you can still tell me if you want more changes.