Firefox fills complete screen - no close box - can't shut down, etc. Makes it worthless

Opening firefox, takes me to default program Yahoo which opens to total full screen thus not showing any tool bars, no URL address field, and nothing at the bottom of screen either. Cant' even shut down properly. Downloaded the latest version and nothing changed. I really need this browser in order to work on web site. Oh yeah, can't see bookmarks either.

Firefox's native "full screen" mode shows the menu bar if you move your mouse all the way to the top of the screen. Or you can press the F11 key to switch between normal and full screen.
If those don't work, perhaps you are in a Flash full screen window? If you right-click, does the menu refer to Adobe Flash?

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Mail won't close, can't shut down my MacBook Pro

Dear Apple Community,
since 10.7.4 Mail won't close sometimes. I use mail sometimes in Full-Screen, sometimes in the standard mode. If I'm finished with Mail, I close mail using "cmd+w" & "cmd+Q" or "cmd+Q". The programm is closed (window is gone), but the little blue bubble stays under the Mail icon at the dock. If I want to shut down my MacBook Pro (early 2011) I get the message "Can't shut down. You have to end Mail."
This *****. Any suggestions for a fix?

I had this issue and got frustrated having to force quit all the time.
I usually quit all programs with shortcut keys.
MAIL now quits everytime if I just click Mail-Quit Mail
Don't use shortcuts to quit it and it will be fine

My mail won't open or close and I can't shut down my mac

My mail won't open or close and I can't shut down my Mac

Same here.
Can't be. This forum covers pre-2006 iMacs; MacBook Pros have a completely different architecture and therefore different issues. For Mail problems, the best place to post is in the forum for your OSX version from the list here:
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I can't shut down my computer because it says mail is open. It says to close mail and continue shut down. Problem is I can't open or close mail now. Can't shut down my computer at all. What can I do?

If you cannot get mail to quit/force quit, you can always remove power from your Mac.
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Press and hold the power button for 5 to 10 seconds, and the Mac will power off.
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I can't close safari (option is greyed out) and I can't shut down the computer because of it. How do I fix this?

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Try to "Force Quit" Safari - either under the Apple menu or by holding down option-Command-esc.
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After installing Mavericks my MacBook Pro and my MacMini can't shut down, only a grey screen and finish. Must be killed by the power button. Why?

After installing Mavericks my MacBook Pro and my MacMini can't shut down, only a grey screen and finish. Must be killed by the power button. Why?
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There are times when I try to start firefox 3.6 that it does not come up,but when I click it again, I get fire fox is running but not responing, close fire fox, or shut down computer. There are other times that it starts up normaly wit no probs

# Question
there are times when I try to start firefox 3.6 that it does not come up,but when I click it again, I get fire fox is running but not responding, close fire fox, or shut down computer. There are other times that it starts up normally wit no probs
..

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Someone on this forum suggested, that USB3 may interfere with the magic mouse.
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Trying to download Firefox and as soon as the "run" box appears Explorer shuts down.

Using Explorer, I'm trying to download Firefox. As soon as the run dialog box opens, Explorer shuts down. What do I need to do to download Firefox.

Does that happen with anything you try to download in IE, not just when downloading Firefox?
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Post your question with full details here: http://answers.microsoft.com/en-us/default.aspx

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Thanks

Of course. If you didn't set up the MacBook Pro yet, simply hold the Power button to turn it off and sell the MacBook Pro. Remember to give the DVDs that came with your MacBook to the new owner. Tell the new owner to install iLife from the Applications disc

HT1414 My Ipod Touch have a black screen when an app shut down and I can not shut down the Ipod. The screen is still black and I did the press two buttons solution and it doesn't work. What I have to do now?

My Ipod Touch have a black screen when an app shut down and I can not shut down the Ipod. The screen is still black and I did the press two buttons solution and it doesn't work. What I have to do now?

Try:
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HT4528 My iphone 4s screen is frozen, I can not shut the phone off, can not answer calls, does anyone know how to unfreeze it?

My iphone 4s screen is frozen, i can not shut the phone off, can not answer the phone or texts,

Reset, hold both home and power buttons until the iPhone begins to start. Usually takes about 10 seconds. Just keep holding both buttons.

TS3276 Hello I have a MacPro Book. When I try to open my email it doesn't open. And when I try to shut down it tells me to close out my email. But I can't even open my email so I can't shut down? What do I do?

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Iphoto will not close or let me shut down computer. Now it's frozen and can't even view photos. Thanks.

I don't know how this started, but I'm unable to shut down my computer because I get message saying my photos are being synced with online... which they aren't. Now iphoto is frozen. Can't shut down computer or view photos.
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I have a MacBook Pro bought about 18 mos ago.

Force restart your computer, back up your iPhoto library, depress the option an command keys, launch iPhoto and rebuild the library
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hold down the power button until you get the box that asks you if you want to shut down.

Firefox fills complete screen - no close box - can't shut down, etc. Makes it worthless

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