Maverick is dead. Closing bug properly.

** Changed in: firefox (Ubuntu)
       Status: Expired => Invalid

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https://bugs.launchpad.net/bugs/681963

Title:
  plugin-container uses 100% of CPU and does not release the resources
  after tabs are closed

Status in “firefox” package in Ubuntu:
  Invalid

Bug description:
  Binary package hint: firefox

  I've noticed that the latest version of Firefox tends to have this
  issue.

  After opening a few tabs with various sites (I believe the most common
  culprit here are sites that use some sort of Flash), I notice that
  plugin-container is using 100% of at least one CPU, and sometimes it's
  driving load on more than one core.

  For example, here's the info from top:

  top - 17:44:31 up 5 days,  5:14,  6 users,  load average: 3.36, 3.54, 3.52
  Tasks: 316 total,   2 running, 313 sleeping,   1 stopped,   0 zombie
  Cpu0  : 23.8%us, 11.5%sy,  0.0%ni, 61.0%id,  1.5%wa,  0.0%hi,  2.2%si,  0.0%st
  Cpu1  : 54.4%us,  5.0%sy,  0.0%ni, 39.6%id,  0.9%wa,  0.0%hi,  0.0%si,  0.0%st
  Cpu2  :100.0%us,  0.0%sy,  0.0%ni,  0.0%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
  Cpu3  : 19.9%us,  2.5%sy,  0.0%ni, 72.2%id,  5.4%wa,  0.0%hi,  0.0%si,  0.0%st
  Cpu4  : 19.6%us, 14.3%sy,  0.0%ni, 66.0%id,  0.0%wa,  0.0%hi,  0.0%si,  0.0%st
  Cpu5  : 38.2%us,  7.6%sy,  0.0%ni, 52.0%id,  2.1%wa,  0.0%hi,  0.0%si,  0.0%st
  Cpu6  :  0.0%us,  3.2%sy,  0.0%ni, 88.9%id,  8.0%wa,  0.0%hi,  0.0%si,  0.0%st
  Cpu7  :  4.2%us,  0.6%sy,  0.0%ni, 89.7%id,  5.4%wa,  0.0%hi,  0.0%si,  0.0%st
  Mem:   3914416k total,  3151832k used,   762584k free,   687044k buffers
  Swap: 10675156k total,   114144k used, 10561012k free,   576012k cached

    PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND          
                                                                 
  24178 bladernr  20   0  702m  55m  23m S  102  1.4 203:10.26 plugin-containe  
                                                                 
   7121 bladernr  20   0  146m  66m  780 R   93  1.7 682:51.00 rsync            
                                                                 
   1429 root      20   0  333m 201m  14m S   23  5.3 873:10.61 Xorg             
                                                                 
   7123 bladernr  20   0  146m 4588  324 S   20  0.1 134:09.67 rsync            
                                                                 
  25211 bladernr  20   0  995m 267m  32m S   17  7.0  18:22.50 firefox-bin      
        

  I have two intensive activities going on here... one is an rsync
  backing up a portable hard disk, the other, is plugin-container,
  launched by Firefox.

  I've seen this behaviour before, without running rsync or any apps
  other than firefox.

  After a while, plugin-container just pegs one or more cores on my CPU,
  and remains that way even AFTER closing all but one tab.  The only way
  I have found to release these resources, and ease the load on my CPUs
  is to kill off Firefox.  Plugin-container just seems to get stuck.

  This also affects video streaming playback as the high CPU usage
  causes streamed video to stutter.

  ProblemType: Bug
  DistroRelease: Ubuntu 10.10
  Package: firefox 3.6.12+build1+nobinonly-0ubuntu0.10.10.1
  ProcVersionSignature: Ubuntu 2.6.35-22.35-generic 2.6.35.4
  Uname: Linux 2.6.35-22-generic x86_64
  NonfreeKernelModules: nvidia
  Architecture: amd64
  Date: Fri Nov 26 17:40:19 2010
  FirefoxPackages:
   firefox 3.6.12+build1+nobinonly-0ubuntu0.10.10.1
   firefox-gnome-support 3.6.12+build1+nobinonly-0ubuntu0.10.10.1
   firefox-branding 3.6.12+build1+nobinonly-0ubuntu0.10.10.1
   abroswer N/A
   abrowser-branding N/A
  InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
  ProcEnviron:
   LANG=en_US.utf8
   SHELL=/bin/bash
  SourcePackage: firefox

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