Created attachment 52973 [details] HTML that causes a parse error This only happens in Chrome and Safari. Firefox loads it just fine. See the attached test case HTML file. Attempting to load it in Chrome or Safari causes a parse error. If you remove the conditional comment block, OR the empty script block below the conditional comment, the page parses correctly.
Firefox 3.6.3 parses this file exactly like Safari does, and also logs an error to console. The problem with this test is that "--\\\>" doesn't (and shouldn't) close a comment.