Firefox zombie process problem

view full story

http://askubuntu.com – When I start Firefox a Firefox zombie process starts sometimes (not always) and then goes away after a few seconds (stays sometimes until firefox is closed). This problem occurs with four computers (2 laptops and 2 desktops running ubuntu 10.04, 11.10, precise beta 1 and beta 2) I also have this same problem with other distros like Fedora 16, Linux mint 12, Debian 6 and Arch Linux. Thunderbird is also affected by this zombie process problem. Firefox safe mode does NOT help! Can someone help me to fix this problem? If you are affected by this bug please click "this bug affects me" on launchpa (HowTos)