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Firefox is steadily downloading data at 50 -150 KBps. Why? How to find out?

  • 5 replies
  • 2 have this problem
  • 39 views
  • Last reply by FredMcD

NatChilds
NatChilds

Activity monitor shows that the Firefox is responsible for all this data but I can see no reason for it. I do have a lot of tabs up but none of them are doing anything so far as I can tell. Is there a way to tell what's going on?

Activity monitor shows that the Firefox is responsible for all this data but I can see no reason for it. I do have a lot of tabs up but none of them are doing anything so far as I can tell. Is there a way to tell what's going on?

Chosen solution

Thanks, Fred and Cor-el. I got Malwarebytes Anti-malware and ran it -- it found no problems. But when I started Firefox again the problem was gone. Strange since turning it off and restarting it last time still had the problem. So I don't know what was happening or why it's stopped. That was last night, and this morning still no problem. Thanks again.

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All Replies (5)

FredMcD
FredMcD

Start Firefox in Safe Mode {web link} by holding down the <Shift> (Mac=Options) key, and then starting Firefox.

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

NatChilds
NatChilds Question owner

The problem is still there. The data rate seems to have built up slowly to the reported rate. Firefox is still in safe mode right now.

cor-el
cor-el
  • Moderator

Try the about:networking page to see what active connections it shows.

See also:

NatChilds
NatChilds Question owner

Chosen Solution

Thanks, Fred and Cor-el. I got Malwarebytes Anti-malware and ran it -- it found no problems. But when I started Firefox again the problem was gone. Strange since turning it off and restarting it last time still had the problem. So I don't know what was happening or why it's stopped. That was last night, and this morning still no problem. Thanks again.

FredMcD
FredMcD

It might have been a corrupt file was removed. Please flag your last post as Solved Problem so others will know.