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Using both Firefox 17 and 18, browser, still freezes unexpectedly and randomly even though have tried almost every suggested fix on mozilla support


I have tried almost everything in support forum to end the freezing problem, and just when I think the latest thing I have read has solved it, it happens again. One page it freezes once in a while is: http://www.nationalpost.com/index.html. Other wise it is random sites that I visit. The only thing I havent done is disable the add-ons that I rely on all the time, namely ReminderFox, Sage, Email Link, and Flashblock, all up-to-date.

I currently have four plugins enabled, being: Adobe Acrobat, itunes application detector, Windows media player firefox plugin and Shockwave Flash, all are up-to-date.

Additional System Details

Installed Plug-ins

  • Shockwave Flash 11.5 r502
  • iTunes Detector Plug-in
  • Adobe PDF Plug-In For Firefox and Netscape 10.1.4
  • np-mswmp


  • User Agent: Mozilla/5.0 (Windows NT 6.0; WOW64; rv:18.0) Gecko/20100101 Firefox/18.0

More Information

"application": {
"name": "Firefox",
"version": "18.0",
"userAgent": "Mozilla/5.0 (Windows NT 6.0; WOW64; rv:18.0) Gecko/20100101 Firefox/18.0",
"supportURL": "http://support.mozilla.org/1/firefox/18.0/WINNT/en-US/"
"modifiedPreferences": {
"accessibility.typeaheadfind.flashBar": 0,
"browser.cache.disk.capacity": 358400,
"browser.cache.disk.smart_size.first_run": false,
"browser.cache.disk.smart_size.use_old_max": false,
"browser.cache.disk.smart_size_cached_value": 358400,
"browser.places.smartBookmarksVersion": 4,
"browser.startup.homepage_override.buildID": "20130104151925",
"browser.startup.homepage_override.mstone": "18.0",
"browser.tabs.onTop": false,
"dom.mozApps.used": true,
"extensions.lastAppVersion": "18.0",
"network.cookie.prefsMigrated": true,
"places.history.expiration.transient_current_max_pages": 103131,
"places.database.lastMaintenance": 1357946203,
"privacy.cpd.siteSettings": true,
"privacy.cpd.offlineApps": true,
"privacy.sanitize.timeSpan": 0,
"privacy.donottrackheader.enabled": true,
"privacy.sanitize.migrateFx3Prefs": true,
"security.warn_viewing_mixed": false
"graphics": {
"numTotalWindows": 1,
"numAcceleratedWindows": 1,
"windowLayerManagerType": "Direct3D 9",
"adapterDescription": "Mobile Intel(R) 4 Series Express Chipset Family",
"adapterVendorID": "0x8086",
"adapterDeviceID": "0x2a42",
"adapterRAM": "Unknown",
"adapterDrivers": "igdumd64 igd10umd64 igdumdx32 igd10umd32",
"driverVersion": "",
"driverDate": "10-4-2012",
"adapterDescription2": "",
"adapterVendorID2": "",
"adapterDeviceID2": "",
"adapterRAM2": "",
"adapterDrivers2": "",
"driverVersion2": "",
"driverDate2": "",
"isGPU2Active": false,
"direct2DEnabled": false,
"directWriteEnabled": false,
"directWriteVersion": "7.0.6002.18592",
"direct2DEnabledMessage": [
"no information"
"webglRenderer": "Google Inc. -- ANGLE (Mobile Intel(R) 4 Series Express Chipset Family)",
"info": {
"AzureCanvasBackend": "cairo",
"AzureFallbackCanvasBackend": "none",
"AzureContentBackend": "none"
"javaScript": {
"incrementalGCEnabled": true
"accessibility": {
"isActive": false,
"forceDisabled": 0
"libraryVersions": {
"NSPR": {
"minVersion": "4.9.4",
"version": "4.9.4"
"NSS": {
"minVersion": " Basic ECC",
"version": " Basic ECC"
"minVersion": "",
"version": ""
"minVersion": " Basic ECC",
"version": " Basic ECC"
"minVersion": " Basic ECC",
"version": " Basic ECC"
"extensions": [
"name": "Email Link button",
"version": "0.9",
"isActive": true,
"id": "{2A638E17-DE1D-48d3-A4B7-39E9670FF77A}"
"name": "Flashblock",
"version": "",
"isActive": true,
"id": "{3d7eb24f-2740-49df-8937-200b1cc08f8a}"
"name": "ReminderFox",
"version": "2.0.2",
"isActive": true,
"id": "{ada4b710-8346-4b82-8199-5de2b400a6ae}"
"name": "Sage",
"version": "1.4.13",
"isActive": true,
"id": "{a6ca9b3b-5e52-4f47-85d8-cca35bb57596}"
"name": "Bookmark Favicon Changer",
"version": "1.73",
"isActive": false,
"id": "bookmarkfaviconchanger@sonthakit"
"name": "DoNotTrackMe",
"version": "",
"isActive": false,
"id": "donottrackplus@abine.com"
"name": "WOT",
"version": "20120926",
"isActive": false,
"id": "{a0d7ccb3-214d-498b-b4aa-0e8fda9a7bf7}"

Tyler Downer
  • Administrator
  • Moderator
1165 solutions 6641 answers

The Reset Firefox feature can fix many issues by restoring Firefox to its factory default state while saving your essential information. Note: This will cause you to lose any Extensions, Open websites, and some Preferences.

To Reset Firefox do the following:

  1. Go to Firefox > Help > Troubleshooting Information.
  2. Click the "Reset Firefox" button.
  3. Firefox will close and reset. After Firefox is done, it will show a window with the information that is imported. Click Finish.
  4. Firefox will open with all factory defaults applied.

Further information can be found in the Reset Firefox – easily fix most problems article.

Did this fix your problems? Please report back to us!

  • Top 10 Contributor
  • Moderator
10756 solutions 96811 answers

Try to disable hardware acceleration in Firefox.

You can also do a check for problems caused by plugins.

In Firefox Safe mode these changes are effective:

  • all extensions are disabled
  • the default theme is used (no persona)
  • userChrome.css and userContent.css are ignored
  • the default toolbar layout is used
  • the Javascript JIT compiler is disabled
  • hardware acceleration is disabled
  • plugins are not affected
  • preferences are not affected