629937 - Firefox is already running, but not responding. If the problem persists shut the computer down.

Status: RESOLVED INCOMPLETE

(Firefox :: General, defect)

Description

[Nicky]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.14) Gecko/20110121 Firefox/3.6.14 ( .NET CLR 3.5.30729)
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.14) Gecko/20110121 Firefox/3.6.14 ( .NET CLR 3.5.30729)

This has happened numerous times since the last update and I have to reboot my computer.  Firefox is closed, but the message reads that it's still running, but not responding.

Reproducible: Sometimes

Steps to Reproduce:
1.It just happens on it's own, not something to be able to reproduce.
2.
3.


Expected Results:  
Not lock me out after I've closed it and let me click on Firefox again to re-open.

Comment 1

[Bill Gianopoulos [:WG9s]]

After you shutdown Firefox and the window disappears, the process continues to run a while to do database cleanup etc.  You need to wait maybe as long as 30 seconds and possibly even longer depending on your hardware configuration and how much history you have it configured to keep, after the old Firefox window disappears before you will be able to relaunch.

Comment 2

[Steve Scott (pxbugz)]

This article should help explain things better https://support.mozilla.com/mai/kb/Firefox%20is%20already%20running%20but%20is%20not%20responding

Comment 3

[[e-mail]]

Same problem! Windows XP

With the previous update this was fixed, but now with MFF 4, the browser is again more "not responding" than working. 

Most often, if I disconnected from the i/net, and connect again - MFF will not respond, which means I have to close it - which takes forever, if it is not responding and then I have to reopen it, which always takes forever.

But even while working, MFF would just stop working or script (especially gmail) would get unresponsive. Also when wants to move/open to another tab/site. 

It is so bad that yesterday 3 "session restores" had to be done!

Sometimes it uses 99% of CPU usage, which means I can do absolutely NOTHING.

Comment 4

[Tim (fmdeveloper)]

Reporter -> Are you still experiencing this issue? Have you tried safe mode or a new profile?

Comment 5

[Tim (fmdeveloper)]

Closing bug as Incomplete - if you are still experiencing this issue or have more information to provide feel free to post back here and we can re-open the bug. You can also get assistance by visiting the Firefox help site -> http://support.mozilla.com/en-US/kb/Ask+a+question