User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET4.0C; .NET4.0E; BRI/1; BRI/2; GWX:QUALIFIED; rv:11.0) like Gecko Steps to reproduce: Turned on my computer Monday AM 7/27/15 checked email and found brief message that Thunderbird updated to 38.0 version. Email messages came in only to freeze up screen & mouse so I was not able to do a proper shut down. Actual results: I had to cut the power and turn off my computer to do a restart. If there is no new email messages I am able to view and use the site without problems. I disabled Lightning the second time I did a restart. Expected results: I should have been warned of the new upgrade so I could have stopped the process or not done parts of it.

Start *Windows'* safe mode with networking enabled - win8 http://windows.microsoft.com/en-us/windows-8/windows-startup-settings-safe-mode - win7 http://windows.microsoft.com/en-us/windows/start-computer-safe-mode#start-computer-safe-mode=windows-7 - XP http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/boot_failsafe.mspx Still In Windows safe mode, start thunderbird in safe mode - http://support.mozillamessaging.com/en-US/kb/safe-mode Does problem go away? Please also specify your ISP, and antivirus software

I need to find a solution to my Thunderbird account freezing up after update to 38.0 ASAP. Every time I receive an email my whole computer locks up! Having to do restart each time is not helping me to conduct business in my office. Safe mode did not clear up the problem. I have Norton 360 & Realtek PCLe FE Family Controller IPV4. All of this worked just fine until 7/29/15 when I turned on my computer.

If Thunderbird is causing your COMPUTER to freeze then you have some hardware, device driver or software loaded in the OS that is getting tripped. If WINDOWS safe mode did not help, then for starters run a full chkdsk on your drive.

Please post in text form, the graphics section of fireox's or Thunderbird's Help | Troubleshooting. Are you at the most current version of driver for your graphics hardware? > I should have been warned of the new upgrade so I could have stopped the process or not done parts of it. Automatic updates are currently disabled, so you should not have been updated or offered an update unless you went to Help | About and requested an update.

Please update to version 38.2.0

Installed version 38.2.0 two days ago and email account is working okay so far. Thank you for sticking with me and finding this solution. I hope not to have anymore problems.

Sir, (or madam) Please post in text form, the graphics section of fireox's or Thunderbird's Help | Troubleshooting. Are you at the most current version of driver for your graphics hardware? And thanks for the update - but we'd still very much like to have this information.

Application Basics Name: Thunderbird Version: 38.2.0 User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.2.0 Profile Folder: Show Folder (Local drive) Application Build ID: 20150813074416 Enabled Plugins: about:plugins Build Configuration: about:buildconfig Memory Use: about:memory Mail and News Accounts account1: INCOMING: account1, , (pop3) mail.auroranewyork.us:110, alwaysSTARTTLS, passwordCleartext OUTGOING: mail.auroranewyork.us:25, alwaysSTARTTLS, passwordCleartext, true account2: INCOMING: account2, , (none) Local Folders, plain, passwordCleartext Crash Reports http://crash-stats.mozilla.com/report/index/bp-03552c69-0f8d-4236-8a1a-bf3672140911 (9/11/2014) Extensions Remove Duplicate Messages, 0.1.14, true, {12345678-1234-1234-1234-123456789abc} Important Modified Preferences Name: Value 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 extensions.lastAppVersion: 38.2.0 font.name.monospace.el: Consolas font.name.monospace.tr: Consolas font.name.monospace.x-baltic: Consolas font.name.monospace.x-central-euro: Consolas font.name.monospace.x-cyrillic: Consolas font.name.monospace.x-unicode: Consolas font.name.monospace.x-western: Consolas font.name.sans-serif.el: Calibri font.name.sans-serif.tr: Calibri font.name.sans-serif.x-baltic: Calibri font.name.sans-serif.x-central-euro: Calibri font.name.sans-serif.x-cyrillic: Calibri font.name.sans-serif.x-unicode: Calibri font.name.sans-serif.x-western: Calibri font.name.serif.el: Cambria font.name.serif.tr: Cambria font.name.serif.x-baltic: Cambria font.name.serif.x-central-euro: Cambria font.name.serif.x-cyrillic: Cambria font.name.serif.x-unicode: Cambria font.name.serif.x-western: Cambria font.size.fixed.el: 14 font.size.fixed.tr: 14 font.size.fixed.x-baltic: 14 font.size.fixed.x-central-euro: 14 font.size.fixed.x-cyrillic: 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Adapter RAM: Unknown Adapter Drivers: igdumd64 igd10umd64 igdumdx32 igd10umd32 Driver Version: 8.15.10.2226 Driver Date: 10-15-2010 Direct2D Enabled: Blocked for your graphics driver version. DirectWrite Enabled: false (6.2.9200.17461) ClearType Parameters: ClearType parameters not found WebGL Renderer: false GPU Accelerated Windows: 0 AzureCanvasBackend: skia AzureSkiaAccelerated: 0 AzureFallbackCanvasBackend: cairo AzureContentBackend: cairo JavaScript Incremental GC: 1 Accessibility Activated: 0 Prevent Accessibility: 0 Library Versions Expected minimum version Version in use NSPR 4.10.8 4.10.8 NSS 3.19.2 Basic ECC 3.19.2 Basic ECC NSS Util 3.19.2 3.19.2 NSS SSL 3.19.2 Basic ECC 3.19.2 Basic ECC NSS S/MIME 3.19.2 Basic ECC 3.19.2 Basic ECC I hope this is what you asked for??

> I hope this is what you asked for?? Yes. And, does the problem return if you ENABLE hardware acceleration in options | advanced | general ?

reporter writes: "I also enabled the hardware acceleration this AM and have not had any problems so far but it has been a slow day for email today." Thanks. Please keep us updated. Also, your initial comment cites version "38.0", but we did not ship a 38.0, except as a beta. Your valid choices are 38.1.0 or 38.0.1. Do you recall which it was?

When I enabled the hardware acceleration option as you requested and my email account froze up again like before. I have unchecked that box and my email is processing okay again.

Do you find a video driver newer than 10-15-2010?

reporter ... (In reply to Wayne Mery (:wsmwk, use Needinfo for questions) from comment #12) > Do you find a video driver newer than 10-15-2010 ??