View Full Version : Firefox 56 and Thunderbird 52.3.0 incredibly slow

23rd October 2017, 05:04 PM

since today I my Firefox and Thunderbird installations take about a minute to start. I don't know, what to do. I tried to upgrade everything, to reboot, to start in 'safe-mode' without extensions, but nothing helps. And I don't have any clue, what can cause this. Does anyone of you have?

Thank you


25th October 2017, 07:23 PM
How much memory do you have? Is there something on journalctl for the root user?
Check the cpu usage during running these programs.

27th October 2017, 03:17 AM
Firefox 54.0.1 runs slow when first accessing YouTube. Then after it's fine.

Don't know if it's a YouTube or a Firefox issue.

Deactivating and uninstalling Privacy Badger helped ALOT.

27th October 2017, 03:00 PM
Do you have extensions? Firefox and Thunderbird use common code in many areas. Firefox is introducing new security enforcements, and this does have an impact on speed.

I can't run my xmarks any longer, and since I also use LastPass, another extension, both are taboo.
Fortunately for the latter, there is a LastPass beta which is compatible (FF 56 and FF 57).
Dictionaries that I use for spell checking (French, Canadian English, and Spanish) are not in the pending FF57. Hopefully something can be done about that oversight.