User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a1) Gecko/20060413 Firefox/3.0a1 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a1) Gecko/20060413 Firefox/3.0a1 I first noticed this with bloglines, when my feeds stopped showing up in the left-hand pane. Loading the page with another browser displayed the feeds correctly. The JavaScript error is: Error: insertAtObj.insertAdjacentHTML is not a function Source File: http://bloglines.com/ftiens4_2.js Line: 180 I see this at other sites too, so it's not specific to Bloglines. This seems to be a good test case: http://webfx.eae.net/dhtml/ieemu/htmldemo.html Reproducible: Always Steps to Reproduce: 1. Visit http://bloglines.com/myblogs Actual Results: Note that although the title of the page indicates unread feeds, nothing appears in the left-hand pane. Verify JavaScript errors in the console. Expected Results: The feeds should load, with no JavaScript errors. This seems to have broken somewhere between 2006041010 and 2006041105. Possibly due to bug 326497, bug 321299 or related to bug 333697.

per comments on forums ->NEW/regression yours aswell Blake ?

I bet this is a regression from bug 326497, I'll try backing it out tomorrow.

I'm guessing backing it out didn't help? I'm still seeing this with Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a1) Gecko/20060421 Minefield/3.0a1 ID:2006042104 [cairo]

20060421 was before the backout. http://bloglines.com/myblogs WFM in Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9a1) Gecko/20060425 Minefield/3.0a1

Excellent. WFM in Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a1) Gecko/20060425 Minefield/3.0a1 ID:2006042505 [cairo]

Marking fixed based on comment 4 and comment 5. I'll investigate bug 326497 more and try to come up with a fix that doesn't break this case.

For future reference this is a reduced testcase for this bug.

RCS file: /cvsroot/mozilla/testing/mochitest/tests/test_bug333983.html,v done Checking in test_bug333983.html; /cvsroot/mozilla/testing/mochitest/tests/test_bug333983.html,v <-- test_bug333983.html initial revision: 1.1 done