Experiencing exactly de same thing! Specialy whith Facebook! I did install facebiik disconec plug in and i foud a big difference for couple hair than slow speed come back! I found when i do a refresh tenfourfox it come back ok bur for for couple hour than it come back slow! Curiously i found that theres another extension thant i never add on call (Firefox Hello Beta) ! I can see on the report troublehooting page but not ont the add-ons manager page ! Curious but it look a add on form morzilla
Many thanks for your prompt reply. I may have been premature in placing
my problem query. After I did so, I tried my "last arrow in my quiver,"
my #2 drive that replicates my primary drive. Its function is to become
primary if/when primary dies. I ran speedof.me several times. It
reported a consistently repeating pattern that remained within the upper
range of my widely swinging primary drive. I was not happy; I assumed
accessing my usual URLs and links would result in the same poor Internet
Did not happen!
My machine running from #2 drive functioned as I expected my primary
drive to run - a few days ago. And this was running 45.5.0.
Next steps were obvious - DiskWarrior to optimize primary drive's
directory, permissions, and files and folders. After this, TechTools Pro
to defragment files, then the drive. The only one of these steps that
reported major problems was my primary drive's directory. Having
repaired and optimized my primary drive's software, and having
reinstalled 45.5.0, I'll see how things work over the weekend.
Despite my not having tested how effective is my maintenance, I must
reiterate that #2 drive - virtually a duplicate of my primary drive -
functions normally with the same exact set-up as the drive that didn't
work worth spit.
FYI: I do not visit ANY social URL, so Pierre, I can furnish nothing useful pertaining to Facebook problems.
I've been running 45.5.0 on my primary drive all evening. Problem is solved. A severely troubled directory was the problem. What is surprising is that the only circumstance where the directory problem manifested was TenFourFox on the Internet.