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Firefox 16.0.1 warns on closing multiple tabs but options set not to warn

Posted

Firefox just updated itself to version 16.0.1. Now, when attempting to close multiple tabs, I get the "Confirm close" warning even though the "Warn me when closing multiple tabs" option is unchecked. I tried checking that option, confirming the change, then unchecking that option again & confirming the 2nd change, too. This has made no difference. Firefox is not obeying the option setting.

The problem didn't occur before the update to 16.0.1 but did occur in the first session afterwards & has persisted since.

Chosen solution

Here just do this and you will be perfectly fine... even if option is selected the about:config is always set to "true" by default (on new firefox version)

Read this answer in context 15

Additional System Details

Installed Plug-ins

  • Shockwave Flash 11.4 r402
  • Google Update
  • Adobe PDF Plug-In For Firefox and Netscape 10.1.4
  • RealJukebox Netscape Plugin
  • RealNetworks(tm) RealPlayer Chrome Background Extension Plug-In
  • RealPlayer(tm) HTML5VideoShim Plug-In
  • RealPlayer(tm) LiveConnect-Enabled Plug-In
  • RealPlayer Download Plugin
  • Next Generation Java Plug-in 1.6.0_33 for Mozilla browsers
  • NPRuntime Script Plug-in Library for Java(TM) Deploy
  • VLC media player Web Plugin 2.0.2
  • 1.9.0009.1
  • DRM Store Netscape Plugin
  • Npdsplay dll
  • DRM Netscape Network Object

Application

  • User Agent: Mozilla/5.0 (Windows NT 5.1; rv:16.0) Gecko/20100101 Firefox/16.0

More Information

Application Basics
Name
Firefox
Version
16.0.1
User Agent
Mozilla/5.0 (Windows NT 5.1; rv:16.0) Gecko/20100101 Firefox/16.0
Profile Folder
Show Folder
Enabled Plugins
about:plugins
Build Configuration
about:buildconfig
Crash Reports
about:crashes
Memory Use
about:memory
Extensions
Name
Version
Enabled
ID
Adblock Plus
2.1.2
true
{d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d}
DownloadHelper
4.9.10
true
{b9db16a4-6edc-47ec-a1f4-b86292ed211d}
Java Console
6.0.33
true
{CAFEEFAC-0016-0000-0033-ABCDEFFEDCBA}
Java Quick Starter
1.0
true
jqs@sun.com
RealPlayer Browser Record Plugin
15.0.5
true
{C3949AC2-4B17-43ee-B4F1-D26B9D42404D}
UnPlug
2.052
true
unplug@compunach
Anti-Banner
11.0.2.579
false
KavAntiBanner@Kaspersky.ru
Interclue
1.6.3
false
{c33c5b47-69c8-45a4-a5e0-af85bbe628dd}
Kaspersky URL Advisor
11.0.2.579
false
linkfilter@kaspersky.ru
Kaspersky Virtual Keyboard
11.0.2.579
false
virtualKeyboard@kaspersky.ru
Microsoft .NET Framework Assistant
1.2.1
false
{20a82645-c095-46ed-80e3-08825760534b}
SmoothWheel (AMO)
0.45.6.20100202.1
false
{5F590AA2-1221-4113-A6F4-A4BB62414FAC}
TweakTube
1.0.7
false
{15e67a59-bd3d-49ae-90dd-b3d3fd14c2ed}
Important Modified Preferences
Name
Value
accessibility.typeaheadfind.casesensitive
1
accessibility.typeaheadfind.flashBar
0
browser.cache.disk.capacity
1048576
browser.cache.disk.smart_size.first_run
false
browser.cache.disk.smart_size_cached_value
1048576
browser.history_expire_days.mirror
180
browser.places.importBookmarksHTML
false
browser.places.importDefaults
false
browser.places.leftPaneFolderId
-1
browser.places.migratePostDataAnnotations
false
browser.places.smartBookmarksVersion
4
browser.places.updateRecentTagsUri
false
browser.startup.homepage
http://www.google.co.uk/firefox?client=firefox-a&rls=org.mozilla:en-GB:official
browser.startup.homepage_override.buildID
20121010144125
browser.startup.homepage_override.mstone
16.0.1
browser.tabs.loadInBackground
false
browser.tabs.onTop
false
browser.tabs.warnOnClose
false
extensions.lastAppVersion
16.0.1
general.useragent.extra.microsoftdotnet
( .NET CLR 3.5.30729; .NET4.0E)
gfx.blacklist.suggested-driver-version
257.21
network.cookie.prefsMigrated
true
places.database.lastMaintenance
1350055472
places.history.expiration.transient_current_max_pages
77154
places.history.expiration.transient_optimal_database_size
123445410
places.last_vacuum
1304371121
print.print_printer
Samsung ML-4500 Series
print.printer_HP_Color_LaserJet_2600n.print_bgcolor
false
print.printer_HP_Color_LaserJet_2600n.print_bgimages
false
print.printer_HP_Color_LaserJet_2600n.print_command
print.printer_HP_Color_LaserJet_2600n.print_downloadfonts
false
print.printer_HP_Color_LaserJet_2600n.print_edge_bottom
0
print.printer_HP_Color_LaserJet_2600n.print_edge_left
0
print.printer_HP_Color_LaserJet_2600n.print_edge_right
0
print.printer_HP_Color_LaserJet_2600n.print_edge_top
0
print.printer_HP_Color_LaserJet_2600n.print_evenpages
true
print.printer_HP_Color_LaserJet_2600n.print_footercenter
print.printer_HP_Color_LaserJet_2600n.print_footerleft
&PT
print.printer_HP_Color_LaserJet_2600n.print_footerright
&D
print.printer_HP_Color_LaserJet_2600n.print_headercenter
print.printer_HP_Color_LaserJet_2600n.print_headerleft
&T
print.printer_HP_Color_LaserJet_2600n.print_headerright
&U
print.printer_HP_Color_LaserJet_2600n.print_in_color
true
print.printer_HP_Color_LaserJet_2600n.print_margin_bottom
0.5
print.printer_HP_Color_LaserJet_2600n.print_margin_left
0.5
print.printer_HP_Color_LaserJet_2600n.print_margin_right
0.5
print.printer_HP_Color_LaserJet_2600n.print_margin_top
0.5
print.printer_HP_Color_LaserJet_2600n.print_oddpages
true
print.printer_HP_Color_LaserJet_2600n.print_orientation
1
print.printer_HP_Color_LaserJet_2600n.print_page_delay
50
print.printer_HP_Color_LaserJet_2600n.print_pagedelay
500
print.printer_HP_Color_LaserJet_2600n.print_paper_data
9
print.printer_HP_Color_LaserJet_2600n.print_paper_height
11.00
print.printer_HP_Color_LaserJet_2600n.print_paper_size_type
0
print.printer_HP_Color_LaserJet_2600n.print_paper_size_unit
1
print.printer_HP_Color_LaserJet_2600n.print_paper_width
8.50
print.printer_HP_Color_LaserJet_2600n.print_reversed
false
print.printer_HP_Color_LaserJet_2600n.print_scaling
1.00
print.printer_HP_Color_LaserJet_2600n.print_shrink_to_fit
true
print.printer_HP_Color_LaserJet_2600n.print_to_file
false
print.printer_HP_Color_LaserJet_2600n.print_unwriteable_margin_bottom
0
print.printer_HP_Color_LaserJet_2600n.print_unwriteable_margin_left
0
print.printer_HP_Color_LaserJet_2600n.print_unwriteable_margin_right
0
print.printer_HP_Color_LaserJet_2600n.print_unwriteable_margin_top
0
print.printer_Samsung_ML-4500_Series.print_bgcolor
false
print.printer_Samsung_ML-4500_Series.print_bgimages
false
print.printer_Samsung_ML-4500_Series.print_command
print.printer_Samsung_ML-4500_Series.print_downloadfonts
false
print.printer_Samsung_ML-4500_Series.print_edge_bottom
0
print.printer_Samsung_ML-4500_Series.print_edge_left
0
print.printer_Samsung_ML-4500_Series.print_edge_right
0
print.printer_Samsung_ML-4500_Series.print_edge_top
0
print.printer_Samsung_ML-4500_Series.print_evenpages
true
print.printer_Samsung_ML-4500_Series.print_footercenter
print.printer_Samsung_ML-4500_Series.print_footerleft
&PT
print.printer_Samsung_ML-4500_Series.print_footerright
&D
print.printer_Samsung_ML-4500_Series.print_headercenter
print.printer_Samsung_ML-4500_Series.print_headerleft
&T
print.printer_Samsung_ML-4500_Series.print_headerright
&U
print.printer_Samsung_ML-4500_Series.print_in_color
true
print.printer_Samsung_ML-4500_Series.print_margin_bottom
0.5
print.printer_Samsung_ML-4500_Series.print_margin_left
0.5
print.printer_Samsung_ML-4500_Series.print_margin_right
0.5
print.printer_Samsung_ML-4500_Series.print_margin_top
0.5
print.printer_Samsung_ML-4500_Series.print_oddpages
true
print.printer_Samsung_ML-4500_Series.print_orientation
0
print.printer_Samsung_ML-4500_Series.print_page_delay
50
print.printer_Samsung_ML-4500_Series.print_pagedelay
500
print.printer_Samsung_ML-4500_Series.print_paper_data
9
print.printer_Samsung_ML-4500_Series.print_paper_height
11.00
print.printer_Samsung_ML-4500_Series.print_paper_size_type
0
print.printer_Samsung_ML-4500_Series.print_paper_size_unit
1
print.printer_Samsung_ML-4500_Series.print_paper_width
8.50
print.printer_Samsung_ML-4500_Series.print_reversed
false
print.printer_Samsung_ML-4500_Series.print_scaling
1.00
print.printer_Samsung_ML-4500_Series.print_shrink_to_fit
true
print.printer_Samsung_ML-4500_Series.print_to_file
false
print.printer_Samsung_ML-4500_Series.print_unwriteable_margin_bottom
0
print.printer_Samsung_ML-4500_Series.print_unwriteable_margin_left
0
print.printer_Samsung_ML-4500_Series.print_unwriteable_margin_right
0
print.printer_Samsung_ML-4500_Series.print_unwriteable_margin_top
0
privacy.popups.showBrowserMessage
false
privacy.sanitize.migrateFx3Prefs
true
privacy.sanitize.timeSpan
4
security.warn_viewing_mixed
false
Graphics
Adapter Description
NVIDIA GeForce 7050 PV / NVIDIA nForce 630a
Vendor ID
0x10de
Device ID
0x053b
Adapter RAM
Unknown
Adapter Drivers
nv4_disp
Driver Version
6.14.11.9621
Driver Date
1-11-2010
WebGL Renderer
Blocked for your graphics driver version. Try updating your graphics driver to version 257.21 or newer.
GPU Accelerated Windows
0. Blocked for your graphics driver version. Try updating your graphics driver to version 257.21 or newer.
JavaScript
Incremental GC
1
Accessibility
Activated
0
Prevent Accessibility
0
Library Versions
Expected minimum version
Version in use
NSPR
4.9.2
4.9.2
NSS
3.13.6.0 Basic ECC
3.13.6.0 Basic ECC
NSS Util
3.13.6.0
3.13.6.0
NSS SSL
3.13.6.0 Basic ECC
3.13.6.0 Basic ECC
NSS S/MIME
3.13.6.0 Basic ECC
3.13.6.0 Basic ECC

StanislavShevchenko 0 solutions 5 answers

For all who is interested, there is a bug report on this issue at the Firefox developer's bug tracker:

https://bugzilla.mozilla.org/show_bug.cgi?id=801072

But it got no attention so far.