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Firefox 49 Released

If anyone wants to get rid of "Recently Bookmarked" which shows up in 49, just right click on it and you can hide it there (at the bottom of the pop out menu).

More useless crap, IMO.
 
This release is the first release which requires SSE2. For context Chrome made this move a while ago (I forget when). This release is also supposed to expand multi-process support.
 
TheRyuu said:
This release is the first release which requires SSE2.
Click to expand...

I don't think that's exactly true. AMD64/x64 extensions require SSE2 as a minimum level of SSE support. So the first 64-bit x64 builds of Firefox were technically the first builds that required SSE2, even if it wasn't optimized to utilize SSE2 at the time.
 
Unless it needs to be enabled first, FF 49 does not look like it has multi-process support yet. I ran my 29-tab job through Firefox 45, and whether the sites had cached content or not, it took 40 seconds to load the lot (4590k CPU). Firefox 49 took the same length of time. Only one process was running throughout.

Chrome took 16 seconds to load the same 29 tabs plus three more.
 
Well, I just did a test - brand new FF 49 install, double checked that there are no addons installed and it is reporting that -

Multiprocess Windows': 0/1 (Disabled by add-ons)

So, I don't know what is up. Could be that it is coming in v.50 instead?



Elixer said:
It is in there... go to about:support, then look for 'Multiprocess Windows' under "Application Basics" for me it is : 0/1 (Disabled by add-ons).
If you go to https://www.mozilla.org/en-US/firefox/new/, and click on 'reresh firefox', that will remove only addons, but keep everything else (password/bookmarks.. etc).
Click to expand...
 
Chiefcrowe said:
Well, I just did a test - brand new FF 49 install, double checked that there are no addons installed and it is reporting that -

Multiprocess Windows': 0/1 (Disabled by add-ons)

So, I don't know what is up. Could be that it is coming in v.50 instead?
Click to expand...
You see this yet?
http://superuser.com/questions/1029...-e10s-on-mozilla-firefox-beta/1108314#1108314

Unsure as to exactly why, didin't find a post about what the reason is.

Looking some more, it seems it should have been default on according to https://wiki.mozilla.org/Electrolysis#Schedule Version 49, "100% of qualifying users"
 
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Thank you Elixer. I tried following those steps on my test pc and it worked. I guess I will do this manually if I don't figure out why it wasn't enabled automatically, but it is odd that it wasn't.

Has anyone else seen that Multiprocess was enabled for you?
 
That is odd. Is that like 1/2 step past test mode? But they have nightly builds for such things, so I am almost thinking something didn't go quite right with the release.
 
Here's what my fresh install of Firefox 49.0.0 64-bit for Windows says in "about:support":
"Multiprocess Windows 1/1 (Enabled by default)"
 
VirtualLarry said:
Here's what my fresh install of Firefox 49.0.0 64-bit for Windows says in "about:support":
"Multiprocess Windows 1/1 (Enabled by default)"
Click to expand...
Thank you. That actually helped. I mean, I tried 64-bit, and it made no difference.

BUT, it got me fiddling more. I found that if I disable all the extensions I use, I get 1/1 (with 34-bit. Haven't tried with 32-bit). If I enable any one of them, back to 0/1. Now it could just be the ones I happen to use (I only have three right now), but still, every single one?
 
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That is so strange because when i tried a brand new install on another computer it wasn't enabled for me and this is with no addons installed! I'll try another one and see what happens.

FYI I also tried the developer edition (v50) and it is enabled in that one with a few addons as well.
 
Just tried updating to 49 (x64) on another computer and it worked just fine so I guess that other one was some kind of bug. It appears that some addons do disable multiprocess and I really hope that in the next version that isn't an issue!
 
Maybe they don't even know all of the potentially malicious addons, or they just wanted people to update the browser to resolve the problem. Apparently they also turned on HPKP for the mozilla addons page to mitigate any potential attacks there.
 
Just updated to 49.0.1 from 48.0.2. You might want to check your Data Choices and Update settings in Options - Advanced . This update turned some of that crap on when I updated.
 
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