I will think that I have closed Firefox, I will go to open it again and I will get a message that it is still running on my system and my system must first be restarted. I am using a special Laptop desk for it. Sorry so long.

Question

I've been on it a bunch lately, plus I tend to watch a lot of movies, back to back, streaming, from Netflix. My laptop was hacked so badly that it was taken back to factory settings and I now use Glary Utilities and CCleaner every two weeks. I use AVG as antivirus. Monthly I run Glary, CCleaner, Malwarebytes' Anti-Malware, Disk Cleanup and Dfrag.
I haven't given my computer a break to breathe. I've been updating my information, like I said already, on all those websites, which is like neverending.
I do have to use Internet Explorer for some things, but Firefox has actually been staying open on my system a lot more than Internet Explorer has been crashing. And I swear, there are no indicators to me, other than opening up Task Manager, I suppose, and I haven't done that, that Firefox is staying open. It truly is looking totally closed. Yet my laptop is giving me this weird message stating that it isn't, so I click Restart, and open it again, then go on my merry way with my work in Firefox.
I have no idea how to tell if my plug-ins are old or not cooperating with my current, updated version of Firefox.
Can somebody dummy their answer down, please? I will give you more details if you ask for them. I don't know what other details to give. I did read through the other options, and this is what fit me the best, I thought. Who knows. Thanks, Tigerstripe

Answer 1

The proper way to close Firefox is through the File menu "Exit" or the equivalent with the Firefox button.
More detail in item '''#38 Firefox already running '''
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[http://dmcritchie.mvps.org/firefox/firefox-problems.htm#fx4interface Fix Firefox 4.0 toolbar user interface, problems (Make Firefox 4.0 look like 3.6) (#fx4interface)]
Firefox already running, to properly shutdown Firefox when closing the last window use File → Exit/Quit (or Firefox button → Exit). Closing Firefox with the [X] in the upper right corner closes the window ("Ctrl+W") but that does not necessarily close Firefox if it has subtasks running. If you want to close and reopen Firefox use the "Restart" within Add-ons if you made a change requiring a restart, or install "[https://addons.mozilla.org/firefox/addon/restartless-restart/ Restartless Restart]" ("Ctrl+Alt+R") which will allow you to take Firefox down and restart without having to check the Windows Task Manager to see if Firefox first actually ended. [http://kb.mozillazine.org/Firefox_hangs Firefox hangs]