Are you using the default theme?

How do I find that I am using the default theme

try this https://support.mozilla.org/en-US/questions/1012145

It has worked for others.

Still no solution. I'd hate to have to go back to outlook express.

Outlook express does not run on windows 7, but I am sure your already aware of that.

Now I made a suggestion, I have a reply which in all honesty says nothing. Did you try it disabling hardware acceleration? I have no idea.

Please go to the troubleshooting information on the help menu and select copy to clipboard and paste into a message here.

Hi Matt, Yes I did disable hardware acceleration without success and I have also downloaded the latest version of Thunderbird and after uninstaling the original installed the new version and still the same. When I backed up my profile I only backed up my address book, nothing else . Regards, Don

Could you please post the Troubleshooting information as requested.

Sorry for the delay, I have been away from the computer. Here is the troubleshooting information you requested. Application Basics

Name: Firefox Version: 37.0.2 User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:37.0) Gecko/20100101 Firefox/37.0 Multiprocess Windows: 0/1

Crash Reports for the Last 3 Days

All Crash Reports

Extensions

Name: Adblock Plus Version: 2.6.9 Enabled: true ID: {d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d}

Name: Evernote Web Clipper Version: 6.0.15 Enabled: true ID: {E0B8C461-F8FB-49b4-8373-FE32E9252800}

Name: WordWeb one-click lookup Version: 5.0.4406 Enabled: true ID: wcapturex@deskperience.com

Name: YouTube™ Flash® Player Version: 1.3 Enabled: true ID: jid1-HAV2inXAnQPIeA@jetpack

Name: Avast Online Security Version: 10.2.0.187 Enabled: false ID: wrc@avast.com

Graphics

Adapter Description: Intel(R) HD Graphics Adapter Drivers: igdumd64 igd10umd64 igdumdx32 igd10umd32 Adapter RAM: Unknown ClearType Parameters: Gamma: 2200 Pixel Structure: R ClearType Level: 100 Enhanced Contrast: 400 Device ID: 0x0046 Direct2D Enabled: true DirectWrite Enabled: true (6.2.9200.16571) Driver Date: 1-10-2012 Driver Version: 8.15.10.2622 GPU #2 Active: false GPU Accelerated Windows: 1/1 Direct3D 11 (OMTC) Subsys ID: 215a17aa Vendor ID: 0x8086 WebGL Renderer: Google Inc. -- ANGLE (Intel(R) HD Graphics Direct3D9Ex vs_3_0 ps_3_0) windowLayerManagerRemote: true AzureCanvasBackend: direct2d 1.1 AzureContentBackend: direct2d 1.1 AzureFallbackCanvasBackend: cairo AzureSkiaAccelerated: 0

Important Modified Preferences

accessibility.typeaheadfind.flashBar: 0 browser.cache.disk.capacity: 358400 browser.cache.disk.smart_size_cached_value: 358400 browser.cache.disk.smart_size.first_run: false browser.cache.disk.smart_size.use_old_max: false browser.cache.frecency_experiment: 1 browser.places.smartBookmarksVersion: 7 browser.privatebrowsing.autostart: true browser.search.useDBForOrder: true browser.sessionstore.restore_on_demand: false browser.sessionstore.upgradeBackup.latestBuildID: 20140923175406 browser.startup.homepage_override.buildID: 20150415140819 browser.startup.homepage_override.mstone: 37.0.2 browser.tabs.warnOnClose: false browser.urlbar.autocomplete.enabled: false browser.urlbar.suggest.bookmark: false browser.urlbar.suggest.history: false browser.urlbar.suggest.openpage: false dom.mozApps.used: true extensions.lastAppVersion: 37.0.2 gfx.direct3d.last_used_feature_level_idx: 1 media.gmp-gmpopenh264.lastUpdate: 1423210597 media.gmp-gmpopenh264.version: 1.3 media.gmp-manager.lastCheck: 1430861636 network.cookie.prefsMigrated: true places.database.lastMaintenance: 1430861637 places.history.expiration.transient_current_max_pages: 102018 plugin.disable_full_page_plugin_for_types: application/pdf plugin.importedState: true print.printer_Canon_MP280_series_Printer.print_bgcolor: false print.printer_Canon_MP280_series_Printer.print_bgimages: false print.printer_Canon_MP280_series_Printer.print_colorspace: print.printer_Canon_MP280_series_Printer.print_command: print.printer_Canon_MP280_series_Printer.print_downloadfonts: false print.printer_Canon_MP280_series_Printer.print_duplex: 1515870810 print.printer_Canon_MP280_series_Printer.print_edge_bottom: 0 print.printer_Canon_MP280_series_Printer.print_edge_left: 0 print.printer_Canon_MP280_series_Printer.print_edge_right: 0 print.printer_Canon_MP280_series_Printer.print_edge_top: 0 print.printer_Canon_MP280_series_Printer.print_evenpages: true print.printer_Canon_MP280_series_Printer.print_footercenter: print.printer_Canon_MP280_series_Printer.print_footerleft: &PT print.printer_Canon_MP280_series_Printer.print_footerright: &D print.printer_Canon_MP280_series_Printer.print_headercenter: print.printer_Canon_MP280_series_Printer.print_headerleft: &T print.printer_Canon_MP280_series_Printer.print_headerright: &U print.printer_Canon_MP280_series_Printer.print_in_color: true print.printer_Canon_MP280_series_Printer.print_margin_bottom: 0.5 print.printer_Canon_MP280_series_Printer.print_margin_left: 0.5 print.printer_Canon_MP280_series_Printer.print_margin_right: 0.5 print.printer_Canon_MP280_series_Printer.print_margin_top: 0.5 print.printer_Canon_MP280_series_Printer.print_oddpages: true print.printer_Canon_MP280_series_Printer.print_orientation: 0 print.printer_Canon_MP280_series_Printer.print_page_delay: 50 print.printer_Canon_MP280_series_Printer.print_paper_data: 9 print.printer_Canon_MP280_series_Printer.print_paper_height: 11.00 print.printer_Canon_MP280_series_Printer.print_paper_name: print.printer_Canon_MP280_series_Printer.print_paper_size_type: 0 print.printer_Canon_MP280_series_Printer.print_paper_size_unit: 1 print.printer_Canon_MP280_series_Printer.print_paper_width: 8.50 print.printer_Canon_MP280_series_Printer.print_plex_name: print.printer_Canon_MP280_series_Printer.print_resolution: 1515870810 print.printer_Canon_MP280_series_Printer.print_resolution_name: print.printer_Canon_MP280_series_Printer.print_reversed: false print.printer_Canon_MP280_series_Printer.print_scaling: 1.00 print.printer_Canon_MP280_series_Printer.print_shrink_to_fit: true print.printer_Canon_MP280_series_Printer.print_to_file: false print.printer_Canon_MP280_series_Printer.print_unwriteable_margin_bottom: 0 print.printer_Canon_MP280_series_Printer.print_unwriteable_margin_left: 0 print.printer_Canon_MP280_series_Printer.print_unwriteable_margin_right: 0 print.printer_Canon_MP280_series_Printer.print_unwriteable_margin_top: 0 privacy.sanitize.migrateFx3Prefs: true storage.vacuum.last.index: 1 storage.vacuum.last.places.sqlite: 1428723665

Important Locked Preferences

JavaScript

Incremental GC: true

Accessibility

Activated: false Prevent Accessibility: 0

Library Versions

NSPR Expected minimum version: 4.10.8 Version in use: 4.10.8

NSS Expected minimum version: 3.17.4 Basic ECC Version in use: 3.17.4 Basic ECC

NSSSMIME Expected minimum version: 3.17.4 Basic ECC Version in use: 3.17.4 Basic ECC

NSSSSL Expected minimum version: 3.17.4 Basic ECC Version in use: 3.17.4 Basic ECC

NSSUTIL Expected minimum version: 3.17.4 Version in use: 3.17.4

Experimental Features

10,000 apologies. I just went back and checked the settings in config editor again and I had set them wrong. Corrected as per your post and now all works well. Thank you for your patience and help. Donsbird