Firefox Support Forum

Beginning 3 days ago, for no reason I know of, Firefox has become sluggish and active windows frequently report that they are "not responding": the cursor will spin, character entry is impossible, scrolling can't be invoked, and even clicks on other open tabs are ignored. (As an example, it has required more than 5 minutes to enter this text so far, even though I am now running in Safe Mode.)

Memory and system utilization usage is unchanged from earlier views under Task Manager (FF with many windows/tabs open may take on average 1524MB out of 32GB on the machine, and perhaps 5% of the cores, more or less).

I have opened no new or never-used-before tabs in this period, and have also closed a handful of them to see whether that produced any difference in these symptoms. (It did not.)

As mentioned I am operating in Safe Mode and these errors persist. In any case my only add-on is Adblock Plus. I upgraded FF to v87.0 last night on the chance that the version change would make a difference, with negative results.

At the moment Troubleshooting info indicates that I have "9/9" Multiprocess Windows, and I will try to include an image from that page.

These hangs occur in all windows, so the fundamental problem appears to be in a more basic process.

No other function on the pc is misbehaving in any way, but FF itself is now nearly unusable.

The only temporary cure I have found is to restart FF, after which there are no occurrences of non-responsive windows for a period of only 3 minutes to 15 minutes (during which FF memory and cpu utilization are generally constant).

Reinstalling FireFox or engaging in further profile updates or about:config changes are all well in scope for this problem determination. The one restriction here is that I cannot afford to lose my current windows/tab entries.

Many thanks in advance for all assistance, questions, and suggestions!

I just got my upgrade from Firefox86 to Firefox90 working, but the tab bar is completely missing.

I still use "old-style" FIrefox. From top to bottom: File/Edit/View menu Search bar Bookmarks Toolbar Tab bar

(yes, I AM old. I've been using Firefox since Version 1 and this particular style works for me, developers be damned.)

The tab bar is completely missing. Firefox knows how many tabs I have open (it warns me when I try to exit) but doesn't show any. The area that the Tab Bar used to occupy is simply empty.

Any ideas on how to fix? (Yes, I have done the Google.)

I just turned off AdBlock Plus in the Add-Ons screen and downloaded ublock origin to try it out. There is no icon for this new plug in to be found anywhere. I can manually go in and change the settings on this plugin in the add-ons screen but there is no icon anywhere to go in quicker or to show a report of how many items were blocked. When I try to Customize my toolbars, the icon is not available there either. The nearest threads I can find on this topic are from 2018 and their solutions are very basic use. Yes, of course I restarted the browser. TIA.

uBlock Origin: 1.39.0 Firefox: 87 filterset (summary):

 network: 83588
 cosmetic: 80376
 scriptlet: 18231
 html: 598

listset (total-discarded, last updated):

 added: 
   adguard-annoyance: 47817-586, now
 default: 
   ublock-filters: 30169-27, now
   ublock-badware: 3455-1, now
   ublock-privacy: 182-0, now
   ublock-abuse: 70-0, now
   ublock-unbreak: 1706-0, now
   easylist: 61109-543, now
   easyprivacy: 26327-473, now
   urlhaus-1: 10038-0, now
   plowe-0: 3699-3, now

filterset (user): [empty] modifiedUserSettings: [none] modifiedHiddenSettings: [none] supportStats:

 launchToReadiness: 1924
 launchFromSelfie: false

All of a sudden I'm getting the Yahoo maiil ID changed to Google Mail with out any authorisation on my part ? I know Google owns Yahoo. I use Yahoo mail all the time and Yahoo is my ID for many applications so why has this happened ? If something like this can change unknowns to me does this mean that Google has control of my MAC and FireFox and its content .??