[Bug 83191] finished processes are not removed completely from list

[Broomer68]

Public bug reported:

Binary package hint: gnome-system-monitor

when system monitor is left open and a process is finished, sometimes there remains a line in the list which cannot be killed because it does not exist.
for instance after quitting Mozilla Thunderbird ( which has four lines in the processlist)
like 
Mozilla Thunder                             Sleeping
    run-mozilla.sh                           Sleeping
        mozilla-thunderbird-bin         Sleeping
             java                                  Running 

the line 
mozilla-thunderbird-bin   running 
remains. when trieing to kill or otherwise remove it, system monitor responds with
cannot kill process with pid 9 with signal 9: no such process.

after closing system-monitor and reopening it, the line is gone.

It is not Mozilla at fault, as there are numerous SH and update processes appear to be running
This all using Feisty running all current updates

ProblemType: Bug
Date: Sun Feb  4 10:37:21 2007
DistroRelease: Ubuntu 7.04
ExecutablePath: /usr/bin/gnome-system-monitor
Package: gnome-system-monitor 2.17.6-0ubuntu1
ProcCmdline: gnome-system-monitor
ProcCwd: /home/jeroen
ProcEnviron:
 LANGUAGE=en_US:en
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/X11:/usr/games
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-system-monitor
Uname: Linux Athlon64 2.6.20-6-generic #2 SMP Wed Jan 31 20:53:39 UTC 2007 i686 GNU/Linux

** Affects: gnome-system-monitor (Ubuntu)
     Importance: Undecided
         Status: Unconfirmed

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finished processes are not removed completely from list
https://launchpad.net/bugs/83191