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screen freezes after about 20 minutes of using firefox39 browser
platform : firefox 39, windows 7, laptop 2 gb ram, dual core
add ons always active : h264 codec, shock wave flash 22.214.171.124, decryption by adobe system 12 Steps to reproduce the issue: 1. launch firefox and open 3 tabs 2. type google in all the tabs 3. search text matter in 2 windows 4. login to face book or any other web site with images 5. keep browsing the face book page for about 15 minutes 6. observe that loading time is very slow and display freezes. Task manager /processes/firefox.exe shows 1.5 gb used , out of total ram of 2 GB 7. go to the other tabs . Observe that display turns black color and screen freezes
Note : this does not happen with chrome browser