Thanks for the agree and disagree follow-ups.
We are mainly Mac OS X users here, with only a few Windows 10 and yes the Win10 seems OK, so it's the Mac OS X Firefox users that were having the most problems.

We'll revert the Win10 users, but keep the Mac OS X users on the FireFox ESR v52.1.2 (64-bit) as that is working brilliantly for them.

Since reverting back to FFesrV52.1.2 there has not been a single crash and all users have reported fast speed and nicely performing browsers (which are never closed, ie they run for weeks or months at a time - when Firefox stays up long enough as v52.1.2 allows again now.

With FFesrv52.6.0 we were getting crashes every 1-2 days and between the crashes as time progresses they consume more memory and slow down even on the 64GByte 3,5GHz 6-core Xenon Macs.

I do so hope the next ESR release can regain the reliability and speed of ESR v52.1.0 as we love that version. Otherwise we shall start exploring alternatives ready for the May deadline, it's a shame as most users are happy with FF when it runs fast enough and is stable and sing sensible memory.
.

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Today's Topics:

    1.  Fwd: Stupidly Slow Firefox ESR (RJRiley.C) (Josh Frye)
    2. Re:  Fwd: Stupidly Slow Firefox ESR (RJRiley.C) (James M. Pulver)
    3. Re:  Fwd: Stupidly Slow Firefox ESR (RJRiley.C) (Luca Manganelli)


----------------------------------------------------------------------

Message: 1
Date: Wed, 7 Mar 2018 13:09:29 +0000
From: Josh Frye<jfry...@ivytech.edu>
To: "'enterprise@mozilla.org'"<enterprise@mozilla.org>
Subject: [Mozilla Enterprise] Fwd: Stupidly Slow Firefox ESR
        (RJRiley.C)
Message-ID:
        
<dm5pr0801mb3672e5125b181eee1f5ebaa2bc...@dm5pr0801mb3672.namprd08.prod.outlook.com>
        
Content-Type: text/plain; charset="us-ascii"

Fwd:  Stupidly Slow Firefox ESR (RJRiley.C)

We have several thousand installs of ESR 52.6.0 and there has not been a report 
yet about slowdowns like your experiencing. The only add ons those installs 
have are the ones put in by the users. I do add that we are on Win 10 
Enterprise, 64 bit, with 64 bit Firefox.


Josh Frye
Classroom Support Technician
Ivy Tech Community College
(office) 812-298-2448


-----Original Message-----
From: Enterprise [mailto:enterprise-boun...@mozilla.org] On Behalf Of 
enterprise-requ...@mozilla.org
Sent: Sunday, March 4, 2018 7:00 AM
To: enterprise@mozilla.org
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    1.  Fwd: Re:  Stupidly Slow Firefox ESR (RJRiley.C)


----------------------------------------------------------------------

Message: 1
Date: Sat, 3 Mar 2018 21:30:12 -0500
From: "RJRiley.C"<rjri...@rjriley.com>
To: Enterprise@mozilla.org
Subject: [Mozilla Enterprise] Fwd: Re:  Stupidly Slow Firefox ESR
Message-ID:<4188d24b-272f-41bc-af97-fc97a7ace...@rjriley.com>
Content-Type: text/plain; charset="utf-8"; Format="flowed"

Not only slowing down over time, but also crashing.? I have noticed that

certain web sites cause this, one example is mlive.com, where just three 
concurrent web pages loaded would bring a 4th gen I7 with nearly a 8000 
CPUBenchmark rating down. Problems with Firefox have become so frequent that I 
now rarely use it. I would appreciate feedback on why mlive.com is such a 
problem. RJRiley

On 3/2/2018 12:00 PM, Java Sys wrote:
Summary: Firefox ESR v52.1 even with 26 add-ons runs fast, is stable,
and uses a low memory footprint - compared to any more recent Firefox
ESR releases.

We shall stay with this Firefox ESR v52.1as long as seems sensible -
and then turn to an alternative to Firefox if the Firefox ESR at the
time is still as slow as, for example, Firefox ESR v52.6.0 (although
all these v52.6.0, v52.5.3, and v52.2.1 were also unacceptable slow
and require far too much memory c.f. Firefox ESR v52.1 )

Like many others it seems, we've experienced a slowing down of Firefox
ESR over time which recently has resulted in stupidly slow Firefox ESR
performance.

Initially we tried creating brand new profiles, which helped for a
(very short) period but slowed back to unacceptable levels within a
few days of (our) normal usage after re-adding back the 26 add-ons.
After reading comments on this list about reverting back to an earlier
version we tried this with Firefox ESR versions v52.6.0, v52.5.3, and
then v52.2.1 - all suffered the slow down after some normal usage
after a few days.
Immensely annoying and very, very time consuming to test, we tried
removing all add-ons which made a small difference but not for long,
we tried disabling safe browsing, and then zapping the SB files, again
some help but after a few days slowing back to treacle speeds again.

However, a glimmer of light for us began with a reversion to Firefox
ESR v52.1 which, even with our full complement of 26 add-ons and usual
extensions has maintained full performance for many days now.

I offer this missive aimed at two groups of folks:
? (a) folks like myself needing a version of Firefox ESR that works
well and fast, and ? (b) hopefully the Firefox developers can try and
work out where they've gone so badly wrong with more recent versions
of Firefox ESR, ?????? as reverting back to the near magical Firefox
ESR v52.1 has been a wonderful experience, reliable, fast, and usable
again ???????? - with many, many tabs (around 100) spread across 8-10
windows here, yet still a small memory footprint and I'll say it
again, great speed performance ???????? - with ALL our add-ons running
nicely too.

Please Firefox devs, sort out the newer Firefox ESR performance (speed
&  memory especially) before we all leave Firefox as unworkable.

Cheers,
Happy Firefox ESR v52.1 users!



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------------------------------

Message: 2
Date: Wed, 7 Mar 2018 08:31:54 -0500
From: "James M. Pulver"<jmp...@cornell.edu>
To: enterprise@mozilla.org
Subject: Re: [Mozilla Enterprise] Fwd: Stupidly Slow Firefox ESR
        (RJRiley.C)
Message-ID:<bbaa697e-eb0c-41c1-cb54-4b352513a...@cornell.edu>
Content-Type: text/plain; charset=utf-8; format=flowed

While I haven't noticed that this is more prevalent with 52.2 and up, we
did get a recent notice on Scientific Linux 7 that it is hanging up and
all around being slow. I've noticed it myself for the entire 52 ESR
line, and recall it being annoyingly slow, if usable in 45 on Windows 7
also... I.e. Firefox having a hanging UI randomly based on web page
isn't anything new to me.

James Pulver
CLASSE Computer Group
Cornell University

On 03/07/2018 08:09 AM, Josh Frye wrote:
Fwd:  Stupidly Slow Firefox ESR (RJRiley.C)

We have several thousand installs of ESR 52.6.0 and there has not been a report 
yet about slowdowns like your experiencing. The only add ons those installs 
have are the ones put in by the users. I do add that we are on Win 10 
Enterprise, 64 bit, with 64 bit Firefox.


Josh Frye
Classroom Support Technician
Ivy Tech Community College
(office) 812-298-2448


-----Original Message-----
From: Enterprise [mailto:enterprise-boun...@mozilla.org] On Behalf Of 
enterprise-requ...@mozilla.org
Sent: Sunday, March 4, 2018 7:00 AM
To: enterprise@mozilla.org
Subject: Enterprise Digest, Vol 81, Issue 4

To unsubscribe via the web interface, visit
        https://mail.mozilla.org/listinfo/enterprise
or, via email, send a message with a subject or body of 'unsubscribe'
to
        enterprise-requ...@mozilla.org

Send Enterprise mailing list submissions to
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        enterprise-ow...@mozilla.org

When replying, please edit your Subject line so it is more specific than "Re: 
Contents of Enterprise digest..."


Today's Topics:

     1.  Fwd: Re:  Stupidly Slow Firefox ESR (RJRiley.C)


----------------------------------------------------------------------

Message: 1
Date: Sat, 3 Mar 2018 21:30:12 -0500
From: "RJRiley.C"<rjri...@rjriley.com>
To: Enterprise@mozilla.org
Subject: [Mozilla Enterprise] Fwd: Re:  Stupidly Slow Firefox ESR
Message-ID:<4188d24b-272f-41bc-af97-fc97a7ace...@rjriley.com>
Content-Type: text/plain; charset="utf-8"; Format="flowed"

Not only slowing down over time, but also crashing.? I have noticed that

certain web sites cause this, one example is mlive.com, where just three 
concurrent web pages loaded would bring a 4th gen I7 with nearly a 8000 
CPUBenchmark rating down. Problems with Firefox have become so frequent that I 
now rarely use it. I would appreciate feedback on why mlive.com is such a 
problem. RJRiley

On 3/2/2018 12:00 PM, Java Sys wrote:
Summary: Firefox ESR v52.1 even with 26 add-ons runs fast, is stable,
and uses a low memory footprint - compared to any more recent Firefox
ESR releases.

We shall stay with this Firefox ESR v52.1as long as seems sensible -
and then turn to an alternative to Firefox if the Firefox ESR at the
time is still as slow as, for example, Firefox ESR v52.6.0 (although
all these v52.6.0, v52.5.3, and v52.2.1 were also unacceptable slow
and require far too much memory c.f. Firefox ESR v52.1 )

Like many others it seems, we've experienced a slowing down of Firefox
ESR over time which recently has resulted in stupidly slow Firefox ESR
performance.

Initially we tried creating brand new profiles, which helped for a
(very short) period but slowed back to unacceptable levels within a
few days of (our) normal usage after re-adding back the 26 add-ons.
After reading comments on this list about reverting back to an earlier
version we tried this with Firefox ESR versions v52.6.0, v52.5.3, and
then v52.2.1 - all suffered the slow down after some normal usage
after a few days.
Immensely annoying and very, very time consuming to test, we tried
removing all add-ons which made a small difference but not for long,
we tried disabling safe browsing, and then zapping the SB files, again
some help but after a few days slowing back to treacle speeds again.

However, a glimmer of light for us began with a reversion to Firefox
ESR v52.1 which, even with our full complement of 26 add-ons and usual
extensions has maintained full performance for many days now.

I offer this missive aimed at two groups of folks:
? (a) folks like myself needing a version of Firefox ESR that works
well and fast, and ? (b) hopefully the Firefox developers can try and
work out where they've gone so badly wrong with more recent versions
of Firefox ESR, ?????? as reverting back to the near magical Firefox
ESR v52.1 has been a wonderful experience, reliable, fast, and usable
again ???????? - with many, many tabs (around 100) spread across 8-10
windows here, yet still a small memory footprint and I'll say it
again, great speed performance ???????? - with ALL our add-ons running
nicely too.

Please Firefox devs, sort out the newer Firefox ESR performance (speed
&  memory especially) before we all leave Firefox as unworkable.

Cheers,
Happy Firefox ESR v52.1 users!



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Message: 3
Date: Thu, 8 Mar 2018 10:24:57 +0100
From: Luca Manganelli<luca_mangane...@comune.trento.it>
To: enterprise@mozilla.org
Subject: Re: [Mozilla Enterprise] Fwd: Stupidly Slow Firefox ESR
        (RJRiley.C)
Message-ID:<afb6d521-242a-c728-3724-bdb89c188...@comune.trento.it>
Content-Type: text/plain; charset=iso-8859-15; format=flowed

Il 07/03/2018 14:31, James M. Pulver ha scritto:
While I haven't noticed that this is more prevalent with 52.2 and up, we
did get a recent notice on Scientific Linux 7 that it is hanging up and
all around being slow. I've noticed it myself for the entire 52 ESR
line, and recall it being annoyingly slow, if usable in 45 on Windows 7
also... I.e. Firefox having a hanging UI randomly based on web page
isn't anything new to me.

Maybe, and I suspect it, the slowdowns are correlated to the infamous
bug with safebrowsing doing excessive I/O operations.


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