Tabs have little clocks on them. Why?
I don't know what happened, but suddenly all the tabs have little clock-like things on them that seem to buffer occasionally. I have never noticed them doing that before. I was watching a webinar and refreshed my browser and the chat box went away. I never was able to get it back, so I looked at something on my panel called ABP, which stands for Adblock Plus to see if something was being blocked. I didn't think I clicked anything, but after that I noticed that I've got these little clocks on all my tabs. The seem to be buffering sometimes at the same time, sometimes at different times. What are they, and how can I get rid of them?
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Hello,
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Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).
- Do NOT click the Reset button on the Safe Mode start window.
- https://support.mozilla.org/kb/Safe+Mode
- https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes
There are other things that need your attention.
Your System Details List shows that you have a user.js file in the profile folder to initialize prefs each time Firefox starts.
The user.js file is only present if you or other software has created this file and normally it wouldn't be there. You can check its content with a plain text editor (right-click: Open with) if you didn't create this file yourself.
The user.js file is read each time Firefox is started and initializes preferences to the value specified in this file, so preferences set via user.js can only be changed temporarily for the current session.
See: