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Firefox 18.0.1 consuming excessive CPU--both in Standard and Safe Mode--when accessing Gmail

Posted

Firefox 18.0.1 consumes excessive CPU--both in Standard and Safe Modes--when accessing Gmail (in Standard Mode). CPU consumption averages around 56% on my dual-CPU, Windows 7 desktop.

The only way to stop this from happening it to open Gmail in "HTML" mode. When I open Gmail in Standard mode, a "Loading..." status shows at the top of the page. After about 30 seconds, a error window pops-up within the Gmail page saying that there is a performance problem and provides the option to load Gmail in a limited, "HTML" mode. Clicking the HTML Mode link solves the issue. I've been using Firefox for years and have never seen this issue until now.

Additional System Details

Installed Plug-ins

  • Next Generation Java Plug-in 10.11.2 for Mozilla browsers
  • Shockwave Flash 11.5 r502
  • VLC media player Web Plugin 2.0.2
  • Citrix ICA Client Plugin (Win32)
  • The plug-in allows you to open and edit files using Microsoft Office applications
  • Office Authorization plug-in for NPAPI browsers

Application

  • User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:18.0) Gecko/20100101 Firefox/18.0

More Information

Application Basics
Name
Firefox
Version
18.0.1
User Agent
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:18.0) Gecko/20100101 Firefox/18.0
Build Configuration
about:buildconfig
Extensions
Name
Version
Enabled
ID
Adblock Plus
2.2.1
true
{d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d}
Download Accelerator Plus (DAP) extension
9.7.0.7
true
{F17C1572-C9EC-4e5c-A542-D05CBB5C5A08}
Flashblock
1.5.15.1
true
{3d7eb24f-2740-49df-8937-200b1cc08f8a}
Norton Toolbar
2013.2.1.36
true
{2D3F3651-74B9-4795-BDEC-6DA2F431CB62}
Norton Vulnerability Protection
11.1.1.5 - 2
true
{BBDA0591-3099-440a-AA10-41764D9DB4DB}
NoScript
2.6.4.3
true
{73a6fe31-595d-460b-a920-fcc0f8843232}
RoboForm Toolbar for Firefox
7.8.4.6
true
{22119944-ED35-4ab1-910B-E619EA06A115}
Memonic Web Clipper
1.2.1
false
{D0AD45D6-8518-11DF-8AD2-3F67DFD72085}
pearltrees
6.0.11
false
collector@broceliand.fr
SearchPredict
1.0.1.0
false
searchpredict@speedbit.com
SPEEDbit Video Downloader
3.0.9
false
{0329E7D6-6F54-462D-93F6-F5C3118BADF2}
Important Modified Preferences
Name
Value
accessibility.typeaheadfind.flashBar
0
browser.cache.disk.capacity
262144
browser.cache.disk.smart_size.enabled
false
browser.cache.disk.smart_size.first_run
false
browser.cache.disk.smart_size.use_old_max
false
browser.cache.disk.smart_size_cached_value
870400
browser.places.smartBookmarksVersion
4
browser.startup.homepage_override.buildID
20130116073211
browser.startup.homepage_override.mstone
18.0.1
dom.mozApps.used
true
extensions.lastAppVersion
18.0.1
network.cookie.prefsMigrated
true
places.database.lastMaintenance
1359364065
places.history.expiration.transient_current_max_pages
104858
privacy.donottrackheader.enabled
true
privacy.sanitize.migrateFx3Prefs
true
security.warn_viewing_mixed
false
Graphics
Adapter Description
NVIDIA GeForce 8600 GT
Adapter Drivers
nvd3dumx,nvwgf2umx,nvwgf2umx nvd3dum,nvwgf2um,nvwgf2um
Adapter RAM
256
ClearType Parameters
Gamma: 2200 Pixel Structure: RGB ClearType Level: 100 Enhanced Contrast: 100
Device ID
0x0402
Direct2D Enabled
true
DirectWrite Enabled
true (6.1.7601.17789)
Driver Date
10-2-2012
Driver Version
9.18.13.697
GPU #2 Active
false
GPU Accelerated Windows
1/1 Direct3D 10
Vendor ID
0x10de
WebGL Renderer
Google Inc. -- ANGLE (NVIDIA GeForce 8600 GT )
AzureCanvasBackend
direct2d
AzureContentBackend
direct2d
AzureFallbackCanvasBackend
cairo
JavaScript
Incremental GC
true
Accessibility
Activated
false
Prevent Accessibility
0
Library Versions
Expected minimum version
Version in use
NSPR
4.9.4
4.9.4
NSS
3.14.1.0 Basic ECC
3.14.1.0 Basic ECC
NSSSMIME
3.14.1.0 Basic ECC
3.14.1.0 Basic ECC
NSSSSL
3.14.1.0 Basic ECC
3.14.1.0 Basic ECC
NSSUTIL
3.14.1.0
3.14.1.0