Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).

• Don't make any changes on the Safe mode start window.
• https://support.mozilla.org/kb/Safe+Mode

• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

Thank you cor-el. The problem seems to be gone in Safe Mode - went to a few web sites and I can see the favicons and addresses. Since I didn't have the problem on all web sites, I'll browse some more later and see that happens.

I am using the default appearance theme, and I only have 2 add-ons, but I have about a dozen extensions. So when I have time later I will disable one by one and hope to find the problem one.

I wonder if this is a Mac-only problem, or if Windows users have also had disappearing addresses and favicons.

I'm marking your response "Helpful" and will come back with "Solved It" if I do indeed solve the problem.

Thanks again,

SB

Edit: 2 extensions and 10 enabled plugins, all else default.

You're welcome.

Which extensions do you have?

Here are 2 images of what I have installed. In addition to those listed as up to date, Google Earth and all DivX are also up to date.

To clarify, what I see in the location bar is contained in my 3rd image below.

Thanks for taking a look.

Create a new profile as a test to check if your current profile is causing the problems.

See "Basic Troubleshooting: Make a new profile":

• https://support.mozilla.org/kb/Basic+Troubleshooting#w_8-make-a-new-profile

If that new profile works then you can transfer some files from the old profile to that new profile, but be careful not to copy corrupted files.

See:

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