You may have turned on caret browsing <F7> by accident. Caret Out {web link} Disables change of the caret browse mode by shortcut key(F7).

Start Firefox in Safe Mode {web link} While you are in safe mode;

Type about:preferences#advanced<Enter> in the address bar.

Under Advanced, Select General. Look for and turn off Use Hardware Acceleration.

Poke around safe web sites. Are there any problems?

Then restart.

I originally posted this as solved but it is not. I deleted the prior versions and reinstalled the newest software. It worked briefly and I concluded the problem was resolved. Not so. I then tried this fix to see if that was the issue but it was not. Back to square one. This only happens with firefox and not other browsers So far it is confined to my laptop. I have not upgraded to the new version on my desktop unit. Any other ideas? Thanks

Type about:support in the address bar and press Enter. Under the main banner, press the button; Copy Text To Clipboard.. Then in the reply box at the bottom of this page, do a right click in the box and select Paste. This will show us your system details. No Personal Information Is Collected.

Application Basics

Name: Firefox Version: 33.1.1 User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:33.0) Gecko/20100101 Firefox/33.0 Multiprocess Windows: 0/1

Crash Reports for the Last 3 Days

All Crash Reports (including 8 pending crashes in the given time range)

Extensions

Name: Dashlane Version: 3.0.7.74559 Enabled: false ID: {442718d9-475e-452a-b3e1-fb1ee16b8e9f}

Name: McAfee Security Scan Plus Version: 1.0 Enabled: false ID: {e4f94d1e-2f53-401e-8885-681602c0ddd8}

Name: McAfee SiteAdvisor Version: 3.7.1 Enabled: false ID: {4ED1F68A-5463-4931-9384-8FFF5ED91D92}

Name: Online Data Protection Suite Version: 5.5.0.6885 Enabled: false ID: sss@sentrybay.com

Name: Skype Click to Call Version: 7.3.16540.9015 Enabled: false ID: {82AF8DCA-6DE9-405D-BD5E-43525BDAD38A}

Graphics

Adapter Description: Intel(R) HD Graphics 4000 Adapter Description (GPU #2): NVIDIA GeForce GT 650M Adapter Drivers: igdumd64 igd10umd64 igd10umd64 igdumd32 igd10umd32 igd10umd32 Adapter Drivers (GPU #2): nvd3dumx,nvwgf2umx,nvwgf2umx nvd3dum,nvwgf2um,nvwgf2um Adapter RAM: Unknown Adapter RAM (GPU #2): 2048 Device ID: 0x0166 Device ID (GPU #2): 0x0fd1 Direct2D Enabled: true DirectWrite Enabled: true (6.2.9200.16571) Driver Date: 3-26-2012 Driver Date (GPU #2): 10-2-2012 Driver Version: 8.15.10.2712 Driver Version (GPU #2): 9.18.13.697 GPU #2 Active: false GPU Accelerated Windows: 1/1 Direct3D 11 (OMTC) Vendor ID: 0x8086 Vendor ID (GPU #2): 0x10de WebGL Renderer: Google Inc. -- ANGLE (Intel(R) HD Graphics 4000 Direct3D9Ex vs_3_0 ps_3_0) windowLayerManagerRemote: true AzureCanvasBackend: direct2d AzureContentBackend: direct2d AzureFallbackCanvasBackend: cairo AzureSkiaAccelerated: 0

Important Modified Preferences

browser.cache.disk.capacity: 358400 browser.cache.disk.smart_size.first_run: false browser.cache.frecency_experiment: 1 browser.places.smartBookmarksVersion: 7 browser.sessionstore.upgradeBackup.latestBuildID: 20141113143407 browser.startup.homepage_override.buildID: 20141113143407 browser.startup.homepage_override.mstone: 33.1.1 extensions.lastAppVersion: 33.1.1 gfx.direct3d.last_used_feature_level_idx: 0 media.gmp-gmpopenh264.lastUpdate: 1418313769 media.gmp-gmpopenh264.version: 1.1 media.gmp-manager.lastCheck: 1418313768 network.cookie.prefsMigrated: true places.history.expiration.transient_current_max_pages: 104858 plugin.disable_full_page_plugin_for_types: application/pdf plugin.importedState: true privacy.sanitize.migrateFx3Prefs: true

Important Locked Preferences

JavaScript

Incremental GC: true

Accessibility

Activated: false Prevent Accessibility: 0

Library Versions

NSPR Expected minimum version: 4.10.7 Version in use: 4.10.7

NSS Expected minimum version: 3.17.2 Basic ECC Version in use: 3.17.2 Basic ECC

NSSSMIME Expected minimum version: 3.17.2 Basic ECC Version in use: 3.17.2 Basic ECC

NSSSSL Expected minimum version: 3.17.2 Basic ECC Version in use: 3.17.2 Basic ECC

NSSUTIL Expected minimum version: 3.17.2 Version in use: 3.17.2

Experimental Features

A post was flagged as Solved Problem. Please remove that flag. It may have been turned on by accident. If you don’t, others that can help may not read the post.

Some of your crash reports weren’t sent to the Mozilla Servers.

In the address bar, type about:crashes<enter>. Note: If any reports do not have BP in front of the numbers, click it and select Submit.

Using your mouse, mark the most resent 7 - 10 crash reports, and copy them. Now go to the reply box below and paste them in.

What security software (firewall, anti-virus) do you have?

Boot the computer in Windows Safe mode with network support (press F8 on the boot screen) as a test to see if that helps.

• http://www.bleepingcomputer.com/tutorials/how-to-start-windows-in-safe-mode/

Do a malware check with several malware scanning programs on the Windows computer. Please scan with all programs because each program detects different malware. All these programs have free versions.

Make sure that you update each program to get the latest version of their databases before doing a scan.

• Malwarebytes' Anti-Malware:
  http://www.malwarebytes.org/mbam.php
• AdwCleaner:
  http://www.bleepingcomputer.com/download/adwcleaner/
  http://www.softpedia.com/get/Antivirus/Removal-Tools/AdwCleaner.shtml
• SuperAntispyware:
  http://www.superantispyware.com/
• Microsoft Safety Scanner:
  http://www.microsoft.com/security/scanner/en-us/default.aspx
• Windows Defender:
  http://windows.microsoft.com/en-us/windows/using-defender
• Spybot Search & Destroy:
  http://www.safer-networking.org/en/index.html
• Kasperky Free Security Scan:
  http://www.kaspersky.com/security-scan

You can also do a check for a rootkit infection with TDSSKiller.

• Anti-rootkit utility TDSSKiller:
  http://support.kaspersky.com/5350?el=88446

See also:

• "Spyware on Windows": http://kb.mozillazine.org/Popups_not_blocked
• https://support.mozilla.org/kb/troubleshoot-firefox-issues-caused-malware