It happens to me every once and a while, I can't find a pattern yet. Refreshing typically makes it go away. I've noticed it with a few stylesheets, [here](http://www.criticalminds.org/vanilla/styles/gypsy/global.css) is the culprit in the photo.
Yes. I've seen that, too. I started a thread about it a few weeks ago and no-one was able to fix it. I know I can't fix it. I think it's a firefox bug. If someone can figure out what the problem is, again, I'd be much obliged.
outbreak, hit up one of the big threads, it appears at either the top or bottom in paginations. Either the number links don't appear correctly or the borders under them seems broken off from the frame. It seems to only affect ff to a large extent. If it's rendering related (has been in 1.0.4 and .5) I'll report it if we can figure out it's cause.