616389 - the plugin_container.exe and firefox.exe memory usage soars while using twitter combined with another site which includes flash-based video/adds

Status: RESOLVED WONTFIX

(Firefox :: General, defect)

Description

[bijm_007]

User-Agent:       Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.5.30729; .NET CLR 3.0.30618; .NET4.0C; .NET4.0E; .NET CLR 1.1.4322) chromeframe/8.0.552.215
Build Identifier: Mozilla/5.0 (Windows NT 6.0; rv:2.0b7) Gecko/20100101 Firefox/4.0b7

While using the web, 2 different web pages each loaded on a seperate tab, not window, causes the memory of plugin_containter.exe and firefox.exe to soar, and as far as I am aware, continues to rise. The pages include twitter and another site which includes flash video.

Reproducible: Always

Steps to Reproduce:
1. Make sure you have only these two websites that are about to be mentioned open in seperate tabs! No other websites open in different windows/tabs.
2.Once Firefox 4 Beta 7 is opened, go to www.twitter.com, sign into an account and leave the vertical slide bar all the way at the top. Make sure twitter is done loading before continuing to next step.
3. Second, after twitter is done loading up, open up a new tab in the SAME WINDOW as the one that twitter is in, and open up this website: http://mapleleafs.nhl.com/club/news.htm?id=542138&navid=DL|TOR|home
4. Assuming you never touched anything else on either of the pages, you should have reproduced the bug.
Actual Results:  
If you look under the processes tab in the task manager in windows, you should see plugin_containter.exe and firefox.exe memory usage soar. Closing firefox.exe through task manager does not close plugin_container.exe or vice-versa.

Expected Results:  
The memory shouldn't have gone up. Memory usage by both should have stayed same instead of soaring. Closing firefox.exe should have closed all other firefox processes.

Addons/Themes used at time: 
-LiteFox (Although I was still able to reproduce this bug with the default theme on.)
-Adblock Plus
-Feedback 1.0.3
-Java Console 6.0.21
The default Windows Vista Aero theme was not used, instead I was using a downloaded theme. Not sure if it makes a difference.

Comment 1

[chanavillegas]

What happens with the plugin_container ???? IT COLAPSES MY COMPUTER ALL THE TIME!!!!!!!!!!!!!!!!!!!!!!!!!   I can't work like this... 
If mozilla doesn't fix it soon I will have to start using chrome  :_(