640742 - Warning:Unresponsive Script and (not responding) at multiple websites

Status: RESOLVED INCOMPLETE

(Core :: JavaScript Engine, defect)

Description

[Anish Sangamam]

User-Agent:       Mozilla/5.0 (Windows NT 5.1; rv:2.0) Gecko/20100101 Firefox/4.0
Build Identifier: Mozilla/5.0 (Windows NT 5.1; rv:2.0) Gecko/20100101 Firefox/4.0

I have experienced the same problem at many websites.Firefox freezes for sometime and then gives an error.here is the screenshot http://i54.tinypic.com/24ctcie.png


Reproducible: Sometimes

Comment 1

[Matthias Versen [:Matti]]

Please disable all extensions and restart Firefox and try it again.

Comment 2

[Anish Sangamam]

The only extension I've installed is Skype and it had already been disabled automatically. Since March 9 I'm using Fifefox4 RC

Comment 3

[Wayne Mery (:wsmwk)]

using vista trunk...while http://v8.googlecode.com/svn/data/benchmarks/v6/run.html is running/loading I do see slow UI response.  I see "(not responding)", but not unresponsive script

1. load http://v8.googlecode.com/svn/data/benchmarks/v6/run.html
2. click around firefox UI (menus, tabs, etc)

UI is slow to respond. taskmanager shows huge memory swings / workingset deltas of 200MB and more.

Comment 4

[Wayne Mery (:wsmwk)]

Matti, do you also see what I report in comment 3?

Comment 5

[Matthias Versen [:Matti]]

I see a slow UI during the test but the memory swings and high CPU is expected at the V8 test -> one test starts, allocates memory and uses CPU until test ends, new test starts ..... until all tests are finished.

I see no slow script warning or freeze
I would guess a slow script warning might appear with a real slow system or under OOM

A new profile could be worth a test if the system or low memory isn't the cause.
- http://support.mozilla.com/kb/Managing%20profiles

Comment 6

[Eve00675]

I have had so many unresponsive scripts messages whether I am on Twitter, Facebook, Youtube etc since converting to the latest Firefox version. It stops everything from working until I just give up and shut down with task manager.

Thinking of rolling back to the previous version.

I have Windows XP

Comment 7

[Wayne Mery (:wsmwk)]

Do you see this if antivirus software is disabled?

Comment 8

[Wayne Mery (:wsmwk)]

no feedback from reporter