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Starting about a week ago, with v60 of FF, I get a "toolbar" that says :

  • 4 replies
  • 1 has this problem
  • Last reply by FredMcD

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"A Web Page is slowing down your browser, What do you want to do? [Stop It] [Wait]"


It locks the browser, pops-up constantly, never stops.... The internet as lots of FF users with this issue and lots of "fixes" that do not fix. I have went back to v58-63 and results are the same. It basically makes FF not worth using even though I go back to FF v1.03. I have had to resort to Microsoft Edge [UGGGG]. I have run McAfee [Total Protection] many times, Malwarebytes many times but it keeps popping up. It appears on FF as a "yellow toolbar" at the bottom of the toolbar band [see attachment]. There is maybe another issue associated with it.

"freak out tabs". For no reason, 2 -3,4 tabs will "battle" with each other and alternately becoming active so fast one can not close neither of them and I have to exit the entire page and reload. Seems like Malware, some sick A$$ playing with us for using FF..

Next am going to try to delete ALL TRACES of FF. I can un-install but know that will not remove all traces so I can start over.

Any one know of an app/program that can WIPE FF off my PC.

Attached screenshots

All Replies (4)

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for the message, A website is slowing down your browser:

  • about:config > dom.ipc.processHangMonitor > false.
  • about:config > dom.ipc.reportProcessHangs > false.

for firefox slowness:

you have alot of extensions, try to remove unnecessary.

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”Webpage is slowing down your browser” This is the new way the browser tells you there is a problem with the script program(s).

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Can you say for SURE this is a "legal" FF response and not a virus, ,malware,etc? Or, does FF actually put out this toolbar response?

Why I ask is: After about 13-14 years using FF, [version 1.0] this week this message shows up for the first time and now about every 5-30 sec. It never stops regardless of the PC speed.

We could solve it easier if we knew it was a valid FF message in a new release. IF we know for sure is a valid FF message,

My PC is NOT RUNNING slower, it is he "message" slowing it down...

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jagman55 said

Can you say for SURE this is a "legal" FF response and not a virus, ,malware,etc?

Further information can be found in this article;

Run most or all of the listed malware scanners. Each works differently. If one program misses something, another may pick it up.