Create a new profile. Then run it. Does it have the same problems?

https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles Windows: 32-bit C:\Program Files\Mozilla Firefox\firefox.exe -p 64-bit C:\Program Files (x86)\Mozilla Firefox\firefox.exe -p Mac: Navigate to /Applications/Utilities. Open the Terminal application. In the Terminal application, enter the following: /Applications/Firefox.app/Contents/MacOS/firefox-bin -p Linux: In Terminal run: firefox –P For users who have one or more builds from mozilla.org this will not work. It would be best to have the full path so if you had placed the untared contents in a folder in /home it would be /home/<username>/foldername/firefox/firefox –P An easy way would be not to do it in a terminal but in say a launcher since you have to point it to the firefox script in Firefox folder you can then add –P on end. You can also have the exact "profilename" after the -P so Firefox will start with that Profile.

https://support.mozilla.org/en-US/kb/recovering-important-data-from-an-old-profile

https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles

I created a new profile twice but neither solved the problem. Am I missing something? I would anticipate an option to set certain parameters in a profile - which I thought might be a text file of some kind - but I never got to see what settings there are in the profile.

I've been using FireFox since probably version 1 and never previously had any problem with it.

Sorry - I meant to thank FredMcD for his suggestion and pointing me to the profile section  :(

Can you provide a screenshot of that problem with your Toolbars and Menus?

https://support.mozilla.org/en-US/kb/how-do-i-create-screenshot-my-problem

It is best to use a compressed image type like PNG or JPG to save the screenshot and make sure that you do not exceed a maximum file size of 1 MB.

Then use the Browse .... button below the Post a Reply text box to upload the screenshot.

And maybe provide a list of your Installed Extensions, that you can Copy from Help > Troubleshooting Information using the "Copy text to clipboard" and then Paste that info into the Post a Reply box in this thread.

Thanks edmeister.

Attached image is just one of my screens to keep it below the 1MB limit and I've added 'Tripple height' to the affected areas so there is no misunderstanding. I've also opened a drop-down menu to show how they are affected as well.

There follows the Extensions report.

===============================

Application Basics

Name: Firefox Version: 35.0.1 User Agent: Mozilla/5.0 (Windows NT 6.1; rv:35.0) Gecko/20100101 Firefox/35.0 Multiprocess Windows: 0/3

Crash Reports for the Last 3 Days

Report ID: bp-d8385048-ba13-442d-a61b-f9e992150130 Submitted: 1 day ago

Report ID: bp-9440a8a0-4019-48e9-9e22-f4e832150130 Submitted: 1 day ago

All Crash Reports (including 4 pending crashes in the given time range)

Extensions

Name: Xmarks Version: 4.3.6 Enabled: true ID: foxmarks@kei.com

Name: Avast Online Security Version: 10.1.0.170 Enabled: false ID: wrc@avast.com

Graphics

Adapter Description: NVIDIA GeForce 9500 GT (Microsoft Corporation - WDDM v1.1) Adapter Drivers: nvd3dum nvwgf2um Adapter RAM: 1024 Device ID: 0x0640 Direct2D Enabled: Blocked for your graphics driver version. Try updating your graphics driver to version 182.65 or newer. DirectWrite Enabled: false (6.1.7601.17514) Driver Date: 5-14-2009 Driver Version: 8.15.11.8593 GPU #2 Active: false GPU Accelerated Windows: 0/3 Basic (OMTC) Blocked for your graphics driver version. Try updating your graphics driver to version 182.65 or newer. Subsys ID: 34981458 Vendor ID: 0x10de WebGL Renderer: Blocked for your graphics driver version. Try updating your graphics driver to version 182.65 or newer. windowLayerManagerRemote: true AzureCanvasBackend: skia AzureContentBackend: cairo AzureFallbackCanvasBackend: cairo AzureSkiaAccelerated: 0

Important Modified Preferences

browser.cache.disk.capacity: 358400 browser.cache.disk.smart_size.first_run: false browser.cache.frecency_experiment: 2 browser.places.smartBookmarksVersion: 7 browser.sessionstore.upgradeBackup.latestBuildID: 20150122214805 browser.startup.homepage: www.bbc.co.uk browser.startup.homepage_override.buildID: 20150122214805 browser.startup.homepage_override.mstone: 35.0.1 dom.mozApps.used: true extensions.lastAppVersion: 35.0.1 media.gmp-gmpopenh264.lastUpdate: 1422630994 media.gmp-gmpopenh264.version: 1.1 media.gmp-manager.lastCheck: 1422630994 network.cookie.prefsMigrated: true places.database.lastMaintenance: 1422717373 places.history.expiration.transient_current_max_pages: 53664 plugin.disable_full_page_plugin_for_types: application/pdf plugin.importedState: true print.printer_CutePDF_Writer.print_bgcolor: false print.printer_CutePDF_Writer.print_bgimages: false print.printer_CutePDF_Writer.print_colorspace: print.printer_CutePDF_Writer.print_command: print.printer_CutePDF_Writer.print_downloadfonts: false print.printer_CutePDF_Writer.print_duplex: 1515870810 print.printer_CutePDF_Writer.print_edge_bottom: 0 print.printer_CutePDF_Writer.print_edge_left: 0 print.printer_CutePDF_Writer.print_edge_right: 0 print.printer_CutePDF_Writer.print_edge_top: 0 print.printer_CutePDF_Writer.print_evenpages: true print.printer_CutePDF_Writer.print_footercenter: print.printer_CutePDF_Writer.print_footerleft: &PT print.printer_CutePDF_Writer.print_footerright: &D print.printer_CutePDF_Writer.print_headercenter: print.printer_CutePDF_Writer.print_headerleft: &T print.printer_CutePDF_Writer.print_headerright: &U print.printer_CutePDF_Writer.print_in_color: true print.printer_CutePDF_Writer.print_margin_bottom: 0.5 print.printer_CutePDF_Writer.print_margin_left: 0.5 print.printer_CutePDF_Writer.print_margin_right: 0.5 print.printer_CutePDF_Writer.print_margin_top: 0.5 print.printer_CutePDF_Writer.print_oddpages: true print.printer_CutePDF_Writer.print_orientation: 0 print.printer_CutePDF_Writer.print_page_delay: 50 print.printer_CutePDF_Writer.print_paper_data: 9 print.printer_CutePDF_Writer.print_paper_height: 11.00 print.printer_CutePDF_Writer.print_paper_name: print.printer_CutePDF_Writer.print_paper_size_type: 0 print.printer_CutePDF_Writer.print_paper_size_unit: 1 print.printer_CutePDF_Writer.print_paper_width: 8.50 print.printer_CutePDF_Writer.print_plex_name: print.printer_CutePDF_Writer.print_resolution: 1515870810 print.printer_CutePDF_Writer.print_resolution_name: print.printer_CutePDF_Writer.print_reversed: false print.printer_CutePDF_Writer.print_scaling: 1.00 print.printer_CutePDF_Writer.print_shrink_to_fit: true print.printer_CutePDF_Writer.print_to_file: false print.printer_CutePDF_Writer.print_unwriteable_margin_bottom: 0 print.printer_CutePDF_Writer.print_unwriteable_margin_left: 0 print.printer_CutePDF_Writer.print_unwriteable_margin_right: 0 print.printer_CutePDF_Writer.print_unwriteable_margin_top: 0 privacy.sanitize.migrateFx3Prefs: true storage.vacuum.last.index: 0 storage.vacuum.last.places.sqlite: 1422641561

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

===============================

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.

The crash report flagged these programs;

AshShell.dll = Windows

Signature GetPropertyDescriptorById https://bugzilla.mozilla.org/show_bug.cgi?id=597741 'It is #19 top crasher'

Perform a System File Check to fix corrupted system files http://www.sevenforums.com/tutorials/1538-sfc-scannow-command-system-file-checker.html

Thanks fred,

I ran the sfc but got '...did not find any intergity violations' response.

Most of the crash reports went correctly but two of them remain without the 'bp-' leader. They simply do not invoke the 'sending report' dialogue but are still shown in the following list you asked for.

bp-2bd66f8c-acc5-4a48-957c-7694e2150131 31/01/2015 19:23 bp-d8a6a430-46ed-419d-aa90-21ec12150131 31/01/2015 19:20 bp-75885998-1481-4b1f-8acf-a12e82150131 31/01/2015 19:19 bp-7e4e7808-db0e-441a-93dd-f39172150131 31/01/2015 19:17 bp-3318c2a5-e1f9-4096-8a70-b6a1c2150131 31/01/2015 19:16 bp-0f40ef51-362c-4972-a126-ed6d22150131 31/01/2015 19:13 3e0a7068-4b53-4de9-aa0d-b45aff9c7bc0 30/01/2015 12:56 f415cd0a-dcd2-4ddc-9339-f9860e75fb76 30/01/2015 11:41 bp-d8385048-ba13-442d-a61b-f9e992150130 30/01/2015 10:33 bp-9440a8a0-4019-48e9-9e22-f4e832150130 30/01/2015 10:06

I'm not sure what you are suggesting I do about 'GetPropertyDescriptorById' issue. I see a reference to it in the page pointed to but there doesn't seem to be any information about removal or other action to take.

At this point, I wouldn't worry about Crash Reports.

It looks to me like a Windows theme issue or it's related to video drivers, and the Troubleshooting Information you provided says "Try updating your graphics driver to version 182.65 or newer."

That should be your first step.

Thanks edmeister,

Resolved  !! - New video driver installed and all is back to single height.

I did consider that it might be a 'Windows' rather than FireFox problem but since the effect was only present in FF - I had tested IE (spit!) but that was 'normal' and no other program showed the effect so I discounted it. Very pleased to know that you have more experience and are prepared to offer support.

Some crash reports about about issues with the Shockwave Flash plugin.

You can check for problems with current Shockwave Flash plugin versions and try this:

• check for updates for your graphics drive drivers
  https://support.mozilla.org/kb/upgrade-graphics-drivers-use-hardware-acceleration
• disable protected mode in the Flash plugin (Flash 11.3+ on Windows Vista and later)
• disable hardware acceleration in the Flash plugin

See also:

• http://kb.mozillazine.org/Flash#Troubleshooting