It seems that comments inside of tables are causing problems and somehow we're generating frames for them. Assigning to Vidur, and Cc'ing Chris This also affects www.sfgate.com

I'm guessing that this is table layout code being a bit too fascist about what type of content can live within it. The comments should be ignored in layout (their CSS display property is "none" by default).

Setting all current Open/Normal to M4.

Also effects www.internet.com

The problem with www.pathfinder.com was that nsCSSFrameConstructor allowed <map>s inside <tr>s to be wrappend in a <td>, <tr>, <table>. Now it doesn't. www.internet.com is a different problem and there is already a bug on it (2958). Comments are not the problem and don't even appear to be in the content model.

Looking at the http://www.sfgate.com URL, I compared the page using a 1/29 build and 3/1 build. Comments are now contained within table. Verifying bug fixed.