Hello,

Certain Firefox problems can be solved by performing a Clean reinstall. This means you remove Firefox program files and then reinstall Firefox. Please follow these steps:

Note: You might want to print these steps or view them in another browser.

1. Download the latest Desktop version of Firefox from http://www.mozilla.org and save the setup file to your computer.
2. After the download finishes, close all Firefox windows (click Exit from the Firefox or File menu).
3. Delete the Firefox installation folder, which is located in one of these locations, by default:
   • Windows:
     • C:\Program Files\Mozilla Firefox
     • C:\Program Files (x86)\Mozilla Firefox
   • Mac: Delete Firefox from the Applications folder.
   • Linux: If you installed Firefox with the distro-based package manager, you should use the same way to uninstall it - see Install Firefox on Linux. If you downloaded and installed the binary package from the Firefox download page, simply remove the folder firefox in your home directory.
4. Now, go ahead and reinstall Firefox:
   1. Double-click the downloaded installation file and go through the steps of the installation wizard.
   2. Once the wizard is finished, choose to directly open Firefox after clicking the Finish button.

Please report back to see if this helped you!

Thank you.

Do you have any icons on the left end of the location bar indicating that Firefox has blocked content?

You can also check the Web Console (Firefox/Tools > Web Developer;Ctrl+Shift+K) for errors.

You need to reload the web page via Ctrl+F5 to reload the page and get a fresh display after selecting the Network tab to see if there are entries with a red icon at the left end.

• https://developer.mozilla.org/en/Tools/Web_Console

I have just reinstalled Firefox and upgraded to 24. However, the problem still lasts.

Dear cor-el,

Thank you for your response and I do not see any error icon next to the address bar. I turned on the developer tool and could see some brown? color circles which have "304 Not Modified" messages.

Does this give you any clue?

Thank you.

seunghon, in your address bar type "about:config" then press enter. If you see a page with the warning message, "This might void your warranty!", click the button labeled "I'll be careful, I promise!", to continue (in fact, there is no warranty whatsoever, it's more a joke to ensure that users are aware of what they are about to do). You can use the checkbox there to avoid the warning in the future. In the resulting window type "javascript.enabled". If that entry has "False" in the "Value" column then right click it and select "Toggle" so that it says "True". If it already says "True" then there is another issue that is causing this.

Those comments are loaded as a JSON file via JavaScript.
You already tried Safe Mode without success, so it is possible that some security software is blocking this file if it isn't Firefox.

Boot the computer in Windows Safe Mode with network support (press F8 on the boot screen) as a test to see if that helps.

You can try to create a new profile as a test to check if your current profile is causing the problems.

See "Creating a profile":

• https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles
• http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues

If the new profile works then you can transfer some files from an existing profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over the problem.

• http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox

Dear graphicjazz,

Thank you for your help. The value is "true."

Thank you.

Was it already "true" or did you change it?

Dear graphicjazz,

I did not change anything. It was already 'true.'

Dear cor-el,

Thank you for your help.

I rebooted my Windows machine in safe-mode (with networking) and tried 3 browsers (IE8, FF24, Chrome29). I found that 3 browsers all showed "Show Comments" button unlike when in Windows' normal mode. The other browsers than FF24, both showed the comments section when I clicked the button, but FF did not.

I rebooted my machine in Windows normal mode. I created a new profile by running "firefox -p" command. However, FF worked in the same way and did not show the comments.

Any other thoughts, please?

Thank you.

This sounds like some other software (likely your security software) is interfering and is blocking either the JavaScript file(s) or the JSON response from the server.

Dear cor-el,

At last, I found the solution. Well, the root cause was not software. I just imported our corporation's certificate into Firefox certificate store via Options -> Advanced -> Certificate -> Authorities -> Import and FF now shows the comments section.

Thank you all for your help.