User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:21.0) Gecko/20100101 Firefox/21.0 (Beta/Release) Build ID: 20130512194445 Steps to reproduce: When I use Windows 7 to navigate on globo.com I use to open lots of tabs and almost all their pages have Flash applications so when I try to play a video from them Flash usually crashes. Actual results: When Flash crash my Mozilla Browser stops working and I can't use it anymore until a crash report window appear then a I can choose to wait until flash works or to kill flash, usually flash never work again and meanwhile I can't use the computer cause it gets too slow. If I choose to kill flash my browser works fine again and if I reload the video it works and I can watch it, but after the first flash's crash the probability of other flash video to crash is much bigger don't needing to have lots of tabs open, then i don't know what to make it crash. One more thing, I don't try to play o lot of flash videos at the same time, sometimes I have a lot of tabs with videos but I start one by one and usually the first one I open is enought to crash. Expected results: All the flash videos should work fine with a lot of tabs open.

Type about:crashes and post some crash IDs (bp-...) related to these crashes. Is your Flash plugin up-to-date?

My Flash Player version is: 11.7.700.202. I think that's the latest version of Flash Player for Windows 7(64-bit). Here are some of the crashes' links: http://crash-stats.mozilla.com/report/index/bp-d36203a9-7e18-4724-9f90-1be992130603 http://crash-stats.mozilla.com/report/index/bp-c627d2db-c4e8-4898-815f-cef092130603 http://crash-stats.mozilla.com/report/index/bp-4fca1461-b7cc-4d39-a7ce-e34762130603 http://crash-stats.mozilla.com/report/index/bp-54a83d87-41a2-4d46-9344-0f1282130603 http://crash-stats.mozilla.com/report/index/bp-db286e88-e940-4460-ac8f-f71982130603 http://crash-stats.mozilla.com/report/index/bp-8c72d8f6-82af-447a-ad7c-b0c932130603

Only the two first reports are recent. It's the generic Flash hang caused by a slow system: * Please update your graphics drivers: https://support.mozilla.org/kb/upgrade-graphics-drivers-use-hardware-acceleration * Try also with Lenovo's Onekey Theater disabled.

I have a similar problem when trying to play Globo.com videos on Firefox 24.0 running on Ubuntu 12.04. As far as stated in http://www.adobe.com/software/flash/about/ I am running the latest flash plugin available for Linux (11.2.202.310). I don't agree that "It's the generic Flash hang caused by a slow system" because: * I am using a new i7 system, with Intel motherboard and 8 GB RAM and * the same videos of Globo.com play normally with Chrome 29.0.1547.76 and flash 11.8.800.170. I said that the problem is similar because, in my case, the flash/browser doesn't crash. The browser start to request more and more memory and, in a few seconds, there is no memory left and the machine becomes almost frozen due to excessive paging activity. With a lot of patience I can switch to a terminal (ctrl-alt-f1) and kill the browser process (it's necessary to wait a lot until you can type anything in the term). I haven't seen this behaviour with videos in any other site besides globo.com. Here is an example of crashing video: http://globotv.globo.com/canal-off/off-films/t/todos-os-videos/v/higher-ground/2354065/

It doesn't crash for me and the memory use is "normal" with Flash. Did you test with a clean profile? https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles

Sounds like https://bugzilla.mozilla.org/show_bug.cgi?id=902630 Adobe released a 11.9 beta Flash plugin which apparently fixed the problem for me on Windows. But I asked if a new 11.2 with the fix is going to be available for Linux. If they don't make it, I'm unsure if Firefox could fix it, after all, I couldn't reproduce it with Google Chrome, Internet Explorer and Opera ?

Yes, it's a dupe.

In response to Loic comment #5, I inform that the bug is still present if I start Firefox from scratch, that is, if I quit Firefox, delete the present profile and start it again. A fresh profile is created, but the machine hangs if the pages mentioned above are loaded. I am aware now that this bug seems to be a duplicate of bug 902630 (I'm not sure, because in my case the Flash Player doesn't crash, but instead it eats so much memory that the system almost freeze). But in this bug report or in the other one, the problem is not solved, as the plain response is that Adobe doesn't give support to Linux versions of Flash anymore. But, as this old (11.2) Linux version works fine with most of video servers on the web, I wonder if the problem is partially on the video server side (one of Globo.com video servers). I think that if the flash (or whatever) version running on the server is changed, we could have this issue solved. Let's ask Globo.com guys to do something... Besides that, why Firefox developer team doesn't include a newer flash version in the software package as Chrome does? The botton line today is: if you are a Linux Firefox user, you have to install the Flash Player by yourself and you have available only an old version of it (11.2). After doing so, you can hang your machine when accessing some pages with Flash content, as the following one, for example. http://globotv.globo.com/canal-off/off-films/t/todos-os-videos/v/higher-ground/2354065/ To avoid this problem in Linux, use Google Chrome instead of Firefox, because the first one comes with his own copy of Flash Player and it is the newest one available (11.8 presently).

It's a dupe because the Flash plugin hangs during watching these videos.

Version and milestone values are being reset to defaults as part of product refactoring.