Comment 8 for bug 764621

Further analysis:

michael@quad:~$ pstree -p 18727
firefox-bin(18727)─┬─plugin-containe(18768)───{plugin-contain}(18769)
                   ├─{firefox-bin}(18742)
                   ├─{firefox-bin}(18743)
                   ├─{firefox-bin}(18767)
                   └─{firefox-bin}(18782)

ps -xms shows these infos:

 1000 18727 0000000000000000 - - - - ? 0:25 /usr/lib/firefox-3.6.24/firefox-bin
 1000 - 0000000000000000 0000000000000000 0000000000001000 0000000180004087 Sl - 0:23 -
 1000 - 0000000000000000 0000000000000000 0000000000001000 0000000180004087 Sl - 0:00 -
 1000 - 0000000000000000 0000000000000000 0000000000001000 0000000180004087 Sl - 0:00 -
 1000 - 0000000000000000 0000000000000000 0000000000001000 0000000180004087 Sl - 0:00 -
 1000 - 0000000000000000 fffffffe7ffbfeff 0000000000001000 0000000180004087 Sl - 0:00 -
 1000 18768 0000000000000000 - - - - ? 0:04 /usr/lib/firefox-3.6.24/plugin-container /usr/lib/adobe-flashplugin/libflashplayer.so 18727 plugin true
 1000 - 0000000000000000 0000000000000000 0000000000001000 00000001800a04e8 Tl - 0:00 -
 1000 - 0000000000000000 00000000000004e8 0000000000001000 00000001800a04e8 Sl - 0:02 -