Hi I' using Firefox 50.0.2 on Ubuntu 16.04.1 LTS and everytime I watch videos youtube or ohter streaming services the stream freezes and the whole computer isn't responsive anymore. I can't even change to another terminal session all that helps is a hard reset. I tried several things and disabled the hardware acceleration tried alternative flash plugins nvidia drivers nothing helps.. Here is a crash report maybe you can get a clue what the real problem is and if theres a solution.. 10SCohort=unsupportedChannel Add-ons=ubufox%40ubuntu.com:3.2,%7BDDC359D1-844A-42a7-9AA1-88A850A938A8%7D:2.0.19,%7B5384767E-00D9-40E9-B72F-9CC39D655D6F%7D:1.5.0.8,artur.dubovoy%40gmail.com:13.2.3,%7B972ce4c6-7e08-4474-a285-3208198ce6fd%7D:47.0,loop%40mozilla.org:1.3.2,firefox%40getpocket.com:1.0.2,e10srollout%40mozilla.org:1.0,langpack-en-GB%40firefox.mozilla.org:47.0,langpack-en-ZA%40firefox.mozilla.org:47.0,langpack-de%40firefox.mozilla.org:47.0 TelemetryEnvironment={"build":{"applicationId":"{ec8030f7-c20a-464f-9b0e-13a3a9e97384}","applicationName":"Firefox","architecture":"x86-64","buildId":"20160606113944","version":"47.0","vendor":"Mozilla","platformVersion":"47.0","xpcomAbi":"x86_64-gcc3","hotfixVersion":"20160106.01"},"partner":{"distributionId":"canonical","distributionVersion":"1.0","partnerId":null,"distributor":null,"distributorChannel":null,"partnerNames":["ubuntu "]},"system":{"memoryMB":3694,"virtualMaxMB":null,"cpu":{"count":2,"cores":2,"vendor":"GenuineIntel","family":6,"model":23,"stepping":10,"l2cacheKB":3072,"l3cacheKB":3072,"speedMHz":2527,"extensions":["hasMMX","hasSSE","hasSSE2","hasSSE3","hasSSSE3","hasSSE4_1"]},"os":{"name":"Linux","version":"4.4.0-28-generic","locale":"de-DE"},"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 9400/integrated/SSE2","vendorID":"NVIDIA Corporation","deviceID":"GeForce 9400/integrated/SSE2","subsysID":null,"RAM":null,"driver":null,"driverVersion":"3.3.0 NVIDIA 340.96","driverDate":null,"GPUActive":true}],"monitors":[],"features":{"compositor":"none"}}},"settings":{"blocklistEnabled":true,"e10sEnabled":false,"e10sCohort":"unsupportedChannel","telemetryEnabled":false,"locale":"de","update":{"channel":"release","enabled":true,"autoDownload":true},"userPrefs":{"browser.cache.disk.capacity":358400,"browser.newtabpage.enhanced":true,"browser.shell.checkDefaultBrowser":true},"addonCompatibilityCheckEnabled":true,"isDefaultBrowser":true},"profile":{"creationDate":16857},"addons":{"activeAddons":{"ubufox@ubuntu.com":{"blocklisted":false,"description":"Ubuntu Firefox Paket.","name":"Ubuntu Modifications","userDisabled":false,"appDisabled":false,"version":"3.2","scope":8,"type":"extension","foreignInstall":true,"hasBinaryComponents":false,"installDay":16696,"updateDay":16696,"signedState":2,"isSystem":false},"{DDC359D1-844A-42a7-9AA1-88A850A938A8}":{"blocklisted":false,"description":"Der Massen-Download-Manager für Firefox","name":"DownThemAll!","userDisabled":false,"appDisabled":false,"version":"2.0.19","scope":1,"type":"extension","foreignInstall":false,"hasBinaryComponents":false,"installDay":16926,"updateDay":16926,"signedState":2,"isSystem":false},"{5384767E-00D9-40E9-B72F-9CC39D655D6F}":{"blocklisted":false,"description":"EPUB-Dateien direkt in Ihrem Browser lesen. Es wird keine zusätzliche Software benötigt.","name":"EPUBReader","userDisabled":false,"appDisabled":false,"version":"1.5.0.8","scope":1,"type":"extension","foreignInstall":false,"hasBinaryComponents":false,"installDay":16938,"updateDay":16938,"signedState":2,"isSystem":false},"loop@mozilla.org":{"blocklisted":false,"description":"Web sharing for Firefox","name":"Firefox Hello","userDisabled":false,"appDisabled":false,"version":"1.3.2","scope":1,"type":"extension","foreignInstall":false,"hasBinaryComponents":false,"installDay":16885,"updateDay":16958,"isSystem":true},"firefox@getpocket.com":{"blocklisted":false,"description":"When you find something you want to view later, put it in Pocket.","name":"Pocket","userDisabled":false,"appDisabled":false,"version":"1.0.2","scope":1,"type":"extension","foreignInstall":false,"hasBinaryComponents":false,"installDay":16916,"updateDay":16958,"isSystem":true},"e10srollout@mozilla.org":{"blocklisted":false,"description":"Staged rollout of Firefox multi-process feature.","name":"Multi-process staged rollout","userDisabled":false,"appDisabled":false,"version":"1.0","scope":1,"type":"extension","foreignInstall":false,"hasBinaryComponents":false,"installDay":16916,"updateDay":16958,"isSystem":true},"artur.dubovoy@gmail.com":{"blocklisted":false,"description":"Flash Video Downloader helps you to download any video (flv, mp4, HD) from YouTube-like, Facebook, B","name":"Flash Video Downloader - YouTube HD Download [4K]","userDisabled":false,"appDisabled":false,"version":"13.2.3","scope":1,"type":"extension","foreignInstall":false,"hasBinaryComponents":false,"installDay":16926,"updateDay":16986,"signedState":2,"isSystem":false}},"theme":{"id":"{972ce4c6-7e08-4474-a285-3208198ce6fd}","blocklisted":false,"description":"Das Standard-Theme.","name":"Standard","userDisabled":false,"appDisabled":false,"version":"47.0","scope":4,"foreignInstall":false,"hasBinaryComponents":false,"installDay":16857,"updateDay":16958},"activePlugins":[{"name":"Java(TM) Plug-in 11.91.2","version":"11.91.2","description":"Next Generation Java Plug-in 11.91.2 for Mozilla browsers","blocklisted":false,"disabled":false,"clicktoplay":true,"mimeTypes":["application/x-java-vm","application/x-java-applet","application/x-java-bean","application/x-java-applet;version=1.1","application/x-java-bean;version=1.1","application/x-java-applet;version=1.1.1","application/x-java-bean;version=1.1.1","application/x-java-applet;version=1.1.2","application/x-java-bean;version=1.1.2","application/x-java-applet;version=1.1.3","application/x-java-bean;version=1.1.3","application/x-java-applet;version=1.2","application/x-java-bean;version=1.2","application/x-java-applet;version=1.2.1","application/x-java-bean;version=1.2.1","application/x-java-applet;version=1.2.2","application/x-java-bean;version=1.2.2","application/x-java-applet;version=1.3","application/x-java-bean;version=1.3","application/x-java-applet;version=1.3.1","application/x-java-bean;version=1.3.1","application/x-java-applet;version=1.4","application/x-java-bean;version=1.4","application/x-java-applet;version=1.4.1","application/x-java-bean;version=1.4.1","application/x-java-applet;version=1.4.2","application/x-java-bean;version=1.4.2","application/x-java-applet;version=1.5","application/x-java-bean;version=1.5","application/x-java-applet;version=1.6","application/x-java-bean;version=1.6","application/x-java-applet;version=1.7","application/x-java-bean;version=1.7","application/x-java-applet;jpi-version=1.8.0_91","application/x-java-bean;jpi-version=1.8.0_91","application/x-java-applet;version=1.8","application/x-java-bean;version=1.8","application/x-java-applet;deploy=11.91.2","application/x-java-applet;javafx=8.0.91","application/x-java-vm-npruntime"],"updateDay":16926},{"name":"Shockwave Flash","version":"11.2.202.626","description":"Shockwave Flash 11.2 r202","blocklisted":false,"disabled":false,"clicktoplay":false,"mimeTypes":["application/x-shockwave-flash","application/futuresplash"],"updateDay":16969}],"activeGMPlugins":{"gmp-gmpopenh264":{"version":"1.5.3","userDisabled":false,"applyBackgroundUpdates":1}},"activeExperiment":{},"persona":null}} SafeMode=0 ProductName=Firefox Theme=classic/1.0 Vendor=Mozilla InstallTime=1465989551 ReleaseChannel=release Notes=OpenGL: NVIDIA Corporation -- GeForce 9400/integrated/SSE2 -- 3.3.0 NVIDIA 340.96 -- texture_from_pixmap\nFP(D000-L100000-W00000000-T0000) Version=47.0 ServerURL=https://crash-reports.mozilla.com/submit?id={ec8030f7-c20a-464f-9b0e-13a3a9e97384}&version=47.0&buildid=20160606113944 AsyncPluginInit=0 useragent_locale=en-US EMCheckCompatibility=true BuildID=20160606113944 ProductID={ec8030f7-c20a-464f-9b0e-13a3a9e97384} CrashTime=1468155242 UptimeTS=693.959684 StartupTime=1468155199 ProcessType=plugin AsyncPluginInit=0 PluginVersion=11.2.202.626 PluginName=Shockwave Flash PluginFilename=libflashplayer.so