843375 - Firefox hangs when loading youtube.com website or any other website with embedded youtube video

Status: RESOLVED WORKSFORME

(Core Graveyard :: Plug-ins, defect)

Description

[Diego Landa]

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:18.0) Gecko/20100101 Firefox/18.0
Build ID: 20130201065344

Steps to reproduce:

OS: MacOS 10.6.8 -- 4GB Ram, 3.5 GHz intel i3
Firefox Tested: 16, 17, 18, 18.0.2

Steps
1. Visit www.youtube.com and load any video
2. Firefox crashes, sometimes freezes computer for about 10 seconds

Another Step

1. Visit https://blog.mozilla.org/tilt/
2. Firefox crashes for each youtube video and freezes computer. (Awful Crash)





Actual results:

Firefox crashes awfully while loading youtube videos both i youtube website or embedded.

Also CPU works very hard, any memory leak?


Expected results:

Load and play any youtube video without crashing

Comment 1

[Scoobidiver (away)]

What is the crash ID from about:crashes?
Does it happen in Safe Mode (see https://support.mozilla.org/kb/troubleshoot-firefox-issues-using-safe-mode)?
Does it happen with Firefox 19, the current version?
What is your Flash version?

Comment 2

[Diego Landa]

Just Updated to Firefox 19, Flash Version : Adobe Flash Player 11.6.602.167

Now Firefox UI freezes while loading youtube.com, also in safe mode

Is there anyway to upload something like a webex to show the issue?

Comment 3

[Scoobidiver (away)]

Does it happen with Flash HW acceleration turn off (see https://support.mozilla.org/kb/keep-flash-up-to-date-and-troubleshoot-problems#w_playing-flash-videos-makes-firefox-hang)?

Comment 4

[Diego Landa]

It still crashes but for a little less time.

I also tried in Safari 5.1.5 and chrome 24.0, both works fine

Comment 5

[Diego Landa]

Also I recently notice that in some cases while having other tabs opened, when I change between them with a Youtube video, when I click on any other tab o sometime the 'youtube' tab to select it, it automatically closes (without making click on the 'x' of the tab)

Comment 6

[Scoobidiver (away)]

Does it happen with a new profile (see https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles)?
A piece of software such an an anti-virus program may also interact with Firefox.

Comment 7

[Diego Landa]

Apparently this fixes the problem, I will make some more test with other scenarios I had

Comment 8

[Diego Landa]

Firefox 19, Adobe Flash 11.6. works in worst case:
1. Visit https://blog.mozilla.org/tilt/
2. Firefox crashes for each youtube video and freezes computer. (Awful Crash)

Fix:
Reset Firefox with Help->Troubleshooting Information-> Reset Firefox
https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles