452719 - Headless process on quit; on relaunch, Location box blank, busy spinners persist after loading

Status: VERIFIED INCOMPLETE

(Firefox :: General, defect)

Description

[Hedley Finger]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.9.0.1) Gecko/2008070208 Firefox/3.0.1
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.9.0.1) Gecko/2008070208 Firefox/3.0.1

After quitting with multiple tabs and relaunching in the same session, tabs load slowly and busy/loading spinner persists even after pages fully loaded.

Reproducible: Always

Steps to Reproduce:
1. Check no firefox.exe process running.
2. Launch Firefox and open lots of tabs.
3. Quit Firefox.  A check of Task Manager shows headless firefox.exe process still running.
4. Relaunch Firefox. See Actual Results below.
5. Quit FF, kill headless process, relaunch.  Tabs load normally and there are no problems.
Actual Results:  
Loading tabs takes forever, and busy/loading spinners persist on all tabs even after all tabs reloaded.  100 percent CPU consumption, and ever-increasing memory grab.  Unresponsive to input, cursor/pointer jerky.

Expected Results:  
Main process and all supprocesses, threads, etc. should have halted and unloaded on quit.

Should have just reloaded all tabs on relaunch within a reasonable time, especially as many would have been cached. No hanging, no CPU and memory grab.

Occurs on Windows XP SP2 and SP3.
Large number of tabs open: 10 to 40 at different times.

The following bugs sound similar and may be the same bug or related:
239223	[Meta] firefox.exe doesn't always exit after closing all windows; session-specific data retained
247281	high processor utilization while downloading pages
254714	while loading a page, on a new tab/window, the location bar does not display the address URL
276532	Browser windows becomes invisible but are still there, at least in Firefox mind
286906	memory increases and increases
364478	after loading start page the loading wheel keeps turning as if still loading page
413390	Firefox slows down and hangs when loading many tabs
422354	Appears to be stuck in an endless loop, page never completes loading
441942	Page loading progress clock/spinner spins forever even after page loaded

Following add-ons installed (but problem has existed for a long time, even with Firefox 2):
Adblock Plus
Adblock filterset.G Updater
Answers
Better Gmail 2
Bookmark Duplicate Detector
British English Dictionary
Broadband Speed Test and Diagnostics
Canadian English Dictionary
ChatZilla
ColorZilla
Copy Link Name
Customize Google
Dictionary Tooltip
Digg Firefox Extension
DOM Inspector
Download Helper
Dummy Lipsum
English (Australian) Dictionary
ErrorZilla MOd
Firecookie
Firefox Universal Uploader (fireuploader)
FireFTP
FireShot
Flagfox
FoxClocks
Foxmarks Bookmark Synchonizer
Gmail Notifier
Google Toolbar for Firefox
Greasemonkey
IE View Lite
Inspect Context
Interclue
Lazarus: Form Recovery
LinkedIn Companion for Firefox
Linkwad
Open IT Online
Page Validator
Palette Grabber
PDF Download
Pencil
Professor X
Sage-Too
SearchInOneStep
Session Manager
Slashy
Undo Closed Tabs Button
United States English Dictionary
URL Fixer
User Agent Switcher
XPath Checker
Zotero

Comment 1

[Hedley Finger]

RFE: Additional functions to aid debugging:
A. Temporarily disable all plug-ins, re-enable.
B. Temporarily disable all add-ons, re-enable.
C. List all add-ons and plug-ins for inclusion in bug reports.

8^)

Comment 2

[Wayne Mery (:wsmwk)]

can you reproduce when started in safe mode?  http://kb.mozillazine.org/Safe_mode

Comment 3

[(mostly gone) XtC4UaLL [:xtc4uall]]

resolving due to lack of response.
reporter, feels free to reopen this bug report if you can answer comment 1.