Well, here at work IE version 6.0 every post initially contains about 3 inches of blank space, before any text appears. I'd give you a screen shot, but I can't.
Edit: I changed my screen size and it stopped doing that, so um nevermind.
Edit2: It seems to happen to atleast one post on every screen when I load it initially, but it fixes itself after I resize my window, when it's already loaded. Creepy.
Edit3: It looks like what it is doing is refusing to show someone;s signature on the screen until it's lower than all the side bar information. Which requires the posts to take up more space heightwise. Sometimes, for a reason I can't fathom it treats people's posts the same way it does a signature and won't post that until after the the side bar info, but when you resize the window the text flies to the top, yet the frames don't resize and there's still a lot of dead space. I wish I was allowed to give you screen shots.