The crash report flagged these programs; igd10umd32.dll = Intel(R) Graphics Technology Total Virtual Memory 4294836224 Available Virtual Memory 3769913344 System Memory Use Percentage 71 Available Page File 4240539648 Available Physical Memory 1218703360 This is for Sumo's Related Bugs 1181091 NEW --- Firefox 40 crashes on startup [@ @0x0 | ScopedXPCOMStartup::~ScopedXPCOMStartup() ] with Websense Endpoint ------------------------------------- Check the above for updates. If you have problems with current Shockwave Flash plugin versions then check this: * see if there are 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) '''https://forums.adobe.com/message/4468493#TemporaryWorkaround''' * disable hardware acceleration in the Flash plugin '''https://forums.adobe.com/thread/891337''' See also: * '''http://kb.mozillazine.org/Flash#Troubleshooting'''