404812 - Memory usage increases suddenly after about one minute and process must be closed / ended

Status: RESOLVED DUPLICATE of bug 404645

(Firefox :: General, defect)

Description

[Alex Angas]

User-Agent:       Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; InfoPath.1; MS-RTC LM 8)
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.2; en-US; rv:1.9b2pre) Gecko/2007112005 Minefield/3.0b2pre

When browsing to some web sites (including the one specified here), Firefox's memory usage can increase suddenly. I am running on a machine with 256MB of RAM. When starting Firefox, Task Manager's 'Mem Usage' column reads about 24,548K. When browsing to this web site, memory goes to about 27,000K. After approximately one minute, memory usage suddenly increases to almost 200MB and my machine grinds to a halt. Firefox.exe must be killed in task manager.

Reproducible: Always

Steps to Reproduce:
1. Start Firefox.
2. Browse to http://support.microsoft.com
3. Wait at least 1 minute.

Actual Results:  
Memory usage of firefox.exe increases substantially (see Task Manager) and machine starts paging hard.

Expected Results:  
No unexpected behaviour.

Comment 1

[Carsten Book [:Tomcat]]

Does it stop happening if you go 
  Edit > Preferences > Security > Uncheck "Tell me if the site I'm visiting is
a suspected forgery"

If so, this is a dupe of bug 404645.