601460 - Crashed if I try to open a new tab, open a website, open about:config...etc

Status: RESOLVED DUPLICATE of bug 601355

(Firefox :: General, defect)

Description

[Kenny Lee]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.7 (KHTML, like Gecko) Chrome/7.0.517.24 Safari/534.7
Build Identifier: ftp://ftp.mozilla.org/pub/firefox/nightly/latest-trunk/firefox-4.0b7pre.en-US.win64-x86_64.zip

This latest trunk build will crashed if:
1. Open a website in a new tab.
2. Open a website.
3. Open about:config
4. Unable to update. Update downloads, but it won't restart, and it pops up an update failed dialog.
5. typing a url in the url bar and pressing enter to navigate to the url location.

Will not crashed if :
1. Do not open a new tab.
2. about:home does not crash.
3. 

Reproducible: Always

Steps to Reproduce:
Scenario 1
1.Type a website url in the url bar.
2.Press enter
3.Firefox crash without even loading the page.

Scenario 2
1. type about:config
2. press enter
3. firefox crashes.

Scenario 3
1. Load about:home
2. open any link in a new tab.
3. firefox crashes
Actual Results:  
Scenario 1 : Firefox crashes
Scenario 2 : Firefox crashes
Scenario 3 : Firefox crashes

Expected Results:  
Scenario 1 : Webpage should load properly
Scenario 2 : about:config page should open
Scenario 3 : link in new tab should open properly.

Basically, Firefox will crashed if you try to do anything like navigating to a webpage, using the url bar to go to a website...etc...


Hardware:

Windows 7 Pro (64bit) (all latest security updates installed)(SP1 beta not install)
Core 2 Quad Q9300
4GB DDR2 RAM
Western Digital 2TB hardisk

Comment 1

[Kenny Lee]

Attachment: Screenshot on crash