The visual artifacts would appear to be browser dependent, based on my limited testing using Firefox on MacOS X 10.4. I'm suspecting that Skeeve's diagnosis is spot on.

Nonetheless, I thought the node was worth a ++ for style and presentation. It clearly stated what was done, and what was observed, including little things like system configuration. It also showed the humility of "maybe I got this wrong", both in the title and in the body. It serves as an example of a well written report.