Hi. I added ppa:mc3man/trusty-media to get ffmpeg (not firefox related). Dist upgrade added a bunch of files and now firefox won't open. I've tried to purge firefox and delete .mozilla. Couldit be some gstreamer or freshplayerplugin clashes? firefox --safe-mode (process:31696): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed (firefox:31696): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::sm-connect after class was initialised (firefox:31696): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::show-crash-dialog after class was initialised (firefox:31696): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::display after class was initialised (firefox:31696): GLib-GObject-WARNING **: Attempt to add property GnomeProgram::default-icon after class was initialised Add-ons: %7B972ce4c6-7e08-4474-a285-3208198ce6fd%7D:41.0 BuildID: 20150901080605 CrashTime: 1441302166 EMCheckCompatibility: true Email: [email protected] FramePoisonBase: 00000000f0dea000 FramePoisonSize: 4096 InstallTime: 1441299470 Notes: OpenGL: NVIDIA Corporation -- GeForce GT 630/PCIe/SSE2 -- 4.2.0 NVIDIA 304.125 -- texture_from_pixmap ProductID: {ec8030f7-c20a-464f-9b0e-13a3a9e97384} ProductName: Firefox ReleaseChannel: beta SafeMode: 0 SecondsSinceLastCrash: 210 StartupTime: 1441302165 TelemetryEnvironment: {"build":{"applicationId":"{ec8030f7-c20a-464f-9b0e-13a3a9e97384}","applicationName":"Firefox","architecture":"x86","buildId":"20150901080605","version":"41.0","vendor":"Mozilla","platformVersion":"41.0","xpcomAbi":"x86-gcc3","hotfixVersion":null},"partner":{"distributionId":null,"distributionVersion":null,"partnerId":null,"distributor":null,"distributorChannel":null,"partnerNames":[]},"system":{"memoryMB":6061,"cpu":{"count":4,"vendor":null,"family":null,"model":null,"stepping":null,"extensions":["hasMMX","hasSSE","hasSSE2","hasSSE3","hasSSSE3","hasSSE4_1"]},"os":{"name":"Linux","version":"3.13.0-63-generic","locale":"en-US"},"hdd":{"profile":{"model":null,"revision":null},"binary":{"model":null,"revision":null},"system":{"model":null,"revision":null}},"gfx":{"D2DEnabled":null,"DWriteEnabled":null,"adapters":[{"description":"NVIDIA Corporation -- GeForce GT 630/PCIe/SSE2","vendorID":"NVIDIA Corporation","deviceID":"GeForce GT 630/PCIe/SSE2","subsysID":null,"RAM":null,"driver":null,"driverVersion":"4.2.0 NVIDIA 304.125","driverDate":null,"GPUActive":true}],"monitors":[{"screenWidth":1920,"screenHeight":1080}]}},"settings":{"blocklistEnabled":true,"isDefaultBrowser":false,"e10sEnabled":false,"telemetryEnabled":true,"isInOptoutSample":false,"locale":"en-US","update":{"channel":"beta","enabled":true,"autoDownload":true},"userPrefs":{}},"profile":{}} Theme: classic/1.0 Throttleable: 1 Vendor: Mozilla Version: 41.0 useragent_locale: chrome://global/locale/intl.properties This report also contains technical information about the state of the application when it crashed.