Since installing the latest Firefox, I am unable to shut down my computer.

On March 19 I downloaded the latest version of Firefox. Yes, it works much more quickly, thank you, but now I am unable to shut down. The start button leads to the three choices of stand-by, shut down, or restart. But the shut-down does not take place. In desperation I tried Ctrl/Alt/Delete, without success. Please advise.

Use "Firefox > Exit" (Windows: Firefox/File > Exit; Mac: Firefox > Quit Firefox; Linux: Firefox/File > Quit) to close Firefox if you are currently doing that by clicking the close X on the Firefox title bar.
See also:
*"Hang at exit": http://kb.mozillazine.org/Firefox_hangs
*"Firefox hangs when you quit it": https://support.mozilla.org/kb/Firefox+hangs
You can check if there is still a Firefox process visible in the Windows Task Manager.
*http://kb.mozillazine.org/Kill_application

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A good place to ask questions and advice about web development is at the MozillaZine Web Development/Standards Evangelism forum.
The helpers at that forum are more knowledgeable about web development issues.
You need to register at the MozillaZine forum site in order to post at that forum.
See http://forums.mozillazine.org/viewforum.php?f=25

Since installing the latest update, Firefox will not load; it gives me the following error -- XML Parsing Error: not well formed.

since installing the latest update, Firefox first operated with some errors but now will not load at all; it gives me the following error --
XML Parsing Error: not well formed
locations chrome://browser/content/browser.xml
Line Number 1191, column 20:
utton id="back-forward-dropmarker" type="menu" chromedir="&locale.dir;"-------------------
please note that the words "utton ID" are exactly as the error message gives it; and at the end of the message there are exactly 19 hyphens.
I don't know why this faulty code is referencing things to do with "chrome"... the Chrome browser is not installed on this PC or anywhere on our network.
Also, this is not the first problem I had after clicking Firefox's prompt for the latest update. Before Firefox retreated into this error message, it was loading but running with some faults...
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2. the back and forward buttons were not highlighted, as if I had not come from a previous page; so once I clicked on a link to a new page I could not go back to where I came from because Fiefox thought I hadn't come from anywhere.
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Even to write this message I have been forced to use (yuk -- I don't like to say this!!!) Internet Explorer. So please -- I need help urgently.
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NOEL

Some how I solved my problem by opening a user account and downloading Firefox 4.0 beta and installing it, I did try it, worked fine, so I did close the user account and did go back to my own account(switched user), the main page that I had problem with Firefox which would not open, I dabble click on Firefox it start working again!! I hope that solves your problem too.
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Since installing the latest software update I have been unable to access my mail app.the screen appears blank?

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Force close the mail app and reset your iPad. See if that fixes it.
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== This happened ==
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Hi, jodie_0182.
I would recommend the steps in the article below. See the section labeled Verify that the Apple Mobile Device USB Driver is installed > For Windows Vista, Windows 7, and Windows 8 > Update the Apple Mobile Device Driver.
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http://support.apple.com/kb/TS1538
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Contact Whatsapp for support.
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Can not install the latest firefox. It tells me that its running so i can not install it. Mean while it's closed. I have check everything that i can to make sure it is closed but still have the same issue.

Cant not install the latest Firefox.

Do a clean (re)install and delete the Firefox program folder.
* Download a fresh Firefox copy and save the file to the desktop.
* Firefox 8.0.x: http://www.mozilla.com/en-US/firefox/all.html
* Uninstall your current Firefox version.
* Do not remove personal data when you uninstall the current version or you lose your bookmarks and other data in the profile folder.
* Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer.
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* http://kb.mozillazine.org/Profile_folder_-_Firefox
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I was taken through msconfigure and adjusted the startup tab but still no joy.
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When I click ok the next message that appears sometime later during the install is;
Service 'Apple Mobile Device' (Apple Mobile Device) Failed to start Verify that you have sufficient privileges to start system services.
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'The installer has insufficient privileges to modify this file C:\Program Files (x86)\Common Files\Apple\Apple Application Support\Web kit.resources\inspector\Images\Spinner Inactive Selected.gif.'
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XP instructions in the following document: How to perform disk error checking in Windows XP
Vista instructions in the following document: Check your hard disk for errors
Windows 7 instructions in the following document: How to use CHKDSK (Check Disk)
Select both Automatically fix file system errors and Scan for and attempt recovery of bad sectors, or use chkdsk /r (depending on which way you decide to go about doing this). You'll almost certainly have to schedule the chkdsk to run on startup. The scan should take quite a while ... if it quits after a few minutes or seconds, something's interfering with the scan.
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And since installing this same update, my Photoshop is crashing just after starting.
Ashutosh.Nigam suggested me in this forum to change the permissions to SLStore & SLCache Folder, but it did not work.
Ali from french Adobe support told me to delete my Settings files, but it was not enough.
A girl with no name from the same team told me to update my video card driver, but you know I run the latest Mac OS X version and everything is updated, mademoiselle.
Stephane sent me a link to a huge page of things to do :
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So you can try to delete your Settings files. I wish it'll work for you. If not you can try the long list above... or hope a better answer from the support.
I didn't change anything but Photoshop on my session and they ensure that the bug is due to my session and not to their update. Strange affair.
Good luck,
JLuc

Since installing the latest Firefox, I am unable to shut down my computer.

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