503041 - when Firefox closes, its task remains open in Task Manager

Status: RESOLVED INCOMPLETE

(Firefox :: General, defect)

Description

[Arvoinen]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.1) Gecko/20090624 Firefox/3.5
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.1) Gecko/20090624 Firefox/3.5

When I close Firefox, the task in the Task Manager (Processes - "firefox.exe") does not close. And on top of that, the CPU usage of that task climbs from 0-2% to 50% or more. So it has to be closed manually from the Task Manager.

Reproducible: Always

Steps to Reproduce:
1. Open Firefox and Task Manager.
2. Load any web page and watch Task Manager (firefox.exe 2%).
3. Close Firefox and watch Task Manager (firefox.exe 50%).
4. Wait to see that firefox.exe does not close on its own.
5. Terminate the firefox.exe task from the Task Manager.


Expected Results:  
The firefox.exe should terminate shortly after Firefox is closed.

OS : Windows Vista Business - Service Pack 2 (32 bit)
Theme : Default
Enabled Add-ons : DownThemAll! - FlashGot
Enabled option to clear history when Firefox closes

Comment 1

[Tobias (:Tobbi) Markus]

Hi, 

does this issue also occur with a clean Profile? See http://support.mozilla.com/en-US/kb/Managing+profiles on how to create a new one.

Comment 2

[luca_cerone]

Yes it does I have the same issue,
I have made a complete removal and then re-installed
Firefox 3.5.1. The issue is still there.
If it can help my AddOns are:
AVG Safe Search 8.5
Microsoft .NET framework assistant
Skype Extension for Firefox 2.2.0.102

Comment 3

[Robert Pfuetze]

I have the same problem nearly every time I close Firefox.  My hard drive begins to run continuously, and when I check firefox.exe it is still visible in Process tab in Task Manager, and the memory usage continues to increase until I end the process. Version 3.6 also has the problem.

Comment 4

[Tyler Downer [He/Him]]

Reporter, are you still seeing this issue with Firefox 3.6.13 or later in safe mode or a fresh profile? If not, please close. These links can help you in your testing.
http://support.mozilla.com/kb/Safe+Mode
http://support.mozilla.com/kb/Managing+profiles

Comment 5

[Tyler Downer [He/Him]]

This bug has had the CLOSEME tag for several weeks and the date in the tag is
far gone. If the reporter can still see this issue, Please retest with Firefox
3.6.x or later and a new profile
(http://support.mozilla.com/kb/Managing+profiles). Then please remove the
closeme tag in the whiteboard, mark the bug against the proper version and
comment on the bug.

Comment 6

[Arthur K. (he/him)]

I'm seeing this behavior on the RC build of Fx29 after visiting speed-battle.com and running tests a few times.

Comment 7

[Arthur K. (he/him)]

I did observe this happen on Fx29.0b9 on a different machine.

Comment 8

[rn10950]

Still there in Fx32.0.3 under XP x86. Had to end process tree in Task Manager to free the memory trapped in the firefox.exe process. Screenshot: http://i1192.photobucket.com/albums/aa323/rn10950/ff_afterquit.png