I'm using Camino Version 2006042704 (1.0.1), and have had minor text disruption, maybe once a day. The usual way it shows is by if a user has a short post, usually there would be white space below, so the post height was still the same to allow for the height of their avatar, location, AIM button etc. Well, in this case the post is exactly the height of their words, so their avatar and location overlap the next post. It's minor compared to some of the examples above, and doesn't disrupt my MR pleasure significantly. 😀 I think it happened a few times months ago, but it has been happening again recently, and seems to coincide with the problems others are having.
Hope that makes sense, and I'll screengrab it and edit this post when it happens again.