Don't use Firefox 21, it's actually more unstable than later versions plus being insecure.

Please update to Firefox 30 (Update Firefox to the latest release) and then see if you are still getting crashes. If you are, please type about:crashes into your address bar, press enter, and copy and paste the Crash ID starting with bp-

Note that your System Details List shows multiple Flash plugins.

1. Shockwave Flash 14.0 r0
2. Shockwave Flash 12.0 r0
3. Shockwave Flash 11.9 r900
4. Shockwave Flash 11.8 r800
5. Shockwave Flash 11.5 r502

You can find the installation path of all plugins on the about:plugins page.

• http://kb.mozillazine.org/Issues_related_to_plugins#Identifying_installed_plugins

You can check the Flash player installation folder for multiple Flash player plugins and remove older version(s) of the plugin (NPSWF32) and possibly (re)install the latest Flash player.

• (32 bit Windows) C:\Windows\System32\Macromed\Flash\
• (64 bit Windows) C:\Windows\SysWOW64\Macromed\Flash\

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

Try to set the Flash plug to click-to-play by setting the permissions for Flash to "Ask To Activate" in "Firefox/Tools > Add-ons > Plugins". That way you can activate the Flash plugin when you need it via the Lego block icon on the location bar.

Thank you for your replies, the problem remains even though corrected the issues

AdapterDeviceID: 0x9591 AdapterVendorID: 0x1002 Add-ons: scriptish%40erikvold.com:0.1.11,%7B972ce4c6-7e08-4474-a285-3208198ce6fd%7D:28.0,troubleshooter%40mozilla.org:1.1a,%7B82AF8DCA-6DE9-405D-BD5E-43525BDAD38A%7D:7.2.15747.10003 AvailablePageFile: 72054804480 AvailablePhysicalMemory: 3539496960 AvailableVirtualMemory: 499277824 BIOS_Manufacturer: American Megatrends Inc. BlockedDllList: BreakpadReserveAddress: 45940736 BreakpadReserveSize: 37748736 BuildID: 20140314220517 CrashTime: 1403241751 EMCheckCompatibility: true Email: @iname.com FramePoisonBase: 00000000f0de0000 FramePoisonSize: 65536 InstallTime: 1395232752 Notes: AdapterVendorID: 0x1002, AdapterDeviceID: 0x9591, AdapterSubsysID: 00000000, AdapterDriverVersion: 8.632.1.2000 D3D10 Layers? D3D10 Layers- D3D9 Layers? D3D9 Layers+ OOMAllocationSize: 32768 ProductID: {ec8030f7-c20a-464f-9b0e-13a3a9e97384} ProductName: Firefox ReleaseChannel: release SecondsSinceLastCrash: 43696 StartupTime: 1403229741 SystemMemoryUsePercentage: 58 Theme: classic/1.0 Throttleable: 1 TotalVirtualMemory: 4294836224 URL: http://www.dailytube4u.com/viewvideo/87873/talkshows/ User32BeforeBlocklist: 1 Vendor: Mozilla Version: 28.0 Winsock_LSP: MSAFD Tcpip [TCP/IP] : 2 : 1 :

MSAFD Tcpip [UDP/IP] : 2 : 2 : %SystemRoot%\system32\mswsock.dll 
MSAFD Tcpip [RAW/IP] : 2 : 3 :  
MSAFD Tcpip [TCP/IPv6] : 2 : 1 : %SystemRoot%\system32\mswsock.dll 
MSAFD Tcpip [UDP/IPv6] : 2 : 2 :  
MSAFD Tcpip [RAW/IPv6] : 2 : 3 : %SystemRoot%\system32\mswsock.dll 
RSVP TCPv6 Service Provider : 2 : 1 :  
RSVP TCP Service Provider : 2 : 1 : %SystemRoot%\system32\mswsock.dll 
RSVP UDPv6 Service Provider : 2 : 2 :  
RSVP UDP Service Provider : 2 : 2 : %SystemRoot%\system32\mswsock.dll 
MSAFD RfComm [Bluetooth] : 2 : 1 : 

useragent_locale: en-US

This report also contains technical information about the state of the application when it crashed.

We're sorry to hear that Firefox is crashing. In order to assist you better, please follow the steps below to provide us crash IDs to help us learn more about your crash.

1. Enter about:crashes in the Firefox address bar and press Enter. A Submitted Crash Reports list will appear, similar to the one shown below.
2. Copy the 5 most recent Report IDs that start with bp- and then go back to your forum question and paste that into the "Post a Reply" box.

Thank you for your help!

More information and further troubleshooting steps can be found in the Troubleshoot Firefox crashes (closing or quitting unexpectedly) article.

bp-80d1a6df-14a0-4203-b046-be77c2140620 6/20/2014 3:01 PM b95d0458-4f63-4196-b3ed-270f2ae53b58 6/20/2014 2:45 AM bp-4c88f6fd-38c1-4639-946c-e64102140619 6/19/2014 7:15 PM bp-88a2360e-ef59-48d2-b09d-d86a12140619 6/19/2014 6:41 PM bp-67fd5d85-8227-42d7-9218-5ca212140619 6/19/2014 5:14 PM bp-093dc04c-991c-4683-a99e-968942140619 6/19/2014 5:12 PM

More crashes

bp-6d660484-0e49-4b8c-80a4-f65642140622 6/22/2014 5:52 AM bp-5433bcbe-16af-4268-b850-beb072140622 6/22/2014 5:18 AM bp-5ba51a7f-0f54-4b59-84bb-6065d2140622 6/22/2014 3:59 AM bp-1fbe46c7-b34a-466a-b954-29d442140622 6/22/2014 3:37 AM bp-1dcbf38b-a10e-446b-b927-ba9cf2140621 6/21/2014 10:47 PM

You can try to disable hardware acceleration in Firefox.

• Tools > Options > Advanced > General > Browsing: "Use hardware acceleration when available"

You need close and restart Firefox after toggling this setting.

• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes