Way to Reproduce: Go to http://groups.google.com/a/google.com On the three-column display of all groups you are subscribed to, you will notice some names to be displayed wrongly. This will happen only when you are logged in.
Created attachment 30563 [details] Screenshot for the rendering bug Problem seen with both Safari 4 and Chrome (so suspecting Webkit)
This page requires a log-in, so there's not much we can do without a reduction.
There's nothing to work with here - closing.