Why is firefox so insanely slow, sticky and sluggish?

As I'm typing this in firefox the letters are popping on the screen about a good 20 plus seconds later. I like a lot of the features it offers but my God it is so utterly, insanely and maddeningly slow, sticky, sluggish, torpid and might as well toss in the entire thesaurus.

Hi Greg,
Have you tried emptying the Firefox cache? If not, In Firefox, from the Tools menu, select Clear Private Data. Make sure Cache is checked, and then click Clear Private Data Now.
Have you tried trashing the Firefox app and downloading and reinstalling Firefox? Make sure and save your Firefox bookmarks: Bookmarks>Organize Bookmarks, under active bookmark manager, file-export.
Also, anytime apps slow down even if it's just one, check your free drive space. Select your MacintoshHD icon on your Desktop, press Command + I that will prompt the Get Info window. Click
the black arrow next to: General so it faces down. You will see: Capacity and Available Minimum drive space shouldn't less than 15% of the total drive. Some users say 10%, some say 20%, so I aim toward the middle. If indeed your short on drive space, transfer files to an external source.
Also, try running Disk Utility and Repair Disk Permissions.
Carolyn

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Why does Firefox run supper slow? Can u fix it to dun faster on webstie

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== This happened ==
Every time Firefox opened
== 6/17/2010

Please ask your question on a forum for the Flash Player

Why does Firefox try to launch Adobe and/or Quicktime when I close Firefox? What is it loading into those programs?

When I shut down Firefox, it tries to start Either Adobe Reader, Quicktime, or both. It has done this ever since the first time I installed an used version 4. The applications do not actually launch, as in a window opening, but they are then present as a process in the system, and I have to close them from the Task Manager. It usually launches just one, but, if it's trying to launch one, and I use Task Manager to close it, it then launches the other. If I hurry and stop that one, Firefox reports that it messed up, and wants me to keep using the Internet for its own purposes that have nothing to do with what I was using the Internet for. This never happened under previous versions of Firefox. Do I need to revert to a previous version? I'm running Kaspersky Internet Security, and it shows I have no malware or the like on my computer, which could cause this. So, why is Firefox trying to do things I did not ask it to, and then expecting me to let it phone home to tell about it when I stop it. By the way, out of good practice, I often close down my Internet connection before closing Firefox, (in case I do get something like a Key Logger loaded, to prevent it from sending its final report before the cache is cleared), but this also happens when I have not yet closed my Internet connection before closing Firefox, so I do not think that is the issue, nor should it be. Your question below about when it happens does not provide for the answer "Every time Firefox Closes", so I picked the closest such answer.

This can be caused by clearing the cookies via [[Clear Recent History]].<br />
* Firefox/Tools > Options > Privacy > Firefox will: "Use custom settings for history" > [X] Clear history when Firefox closes > Settings
You can try to exclude the cookies to test that.<br />
You can let all cookies expire when you close Firefox to remove unwanted cookies and keep the ones with an allow exception.
* Tools > Options > Privacy > Cookies: "Keep until": "I close Firefox"
If you use [[Clear Recent History]] to clear the cookies when you close Firefox then Firefox also tries to clear the cookies from plugins like Flash and starts a plugin-container process for each plugin and possibly for each cookie (?) and that can add extra time if there are a lot of cookies to remove and also can cause an unresponsive script error to appear.

Why is firefox running so slow

why is firefox running so slowly?

Can be Add-ons. Start up Fx in Safe Mode to test by holding down the Option key. This will run without any Add-ons. If it's OK like that, disable them all and then add them back one at a time to see which one is responsible.

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I repeat this using "Open New Window" and when I have up to 3 windows, all with single blank tabs open, I close them all. Once more I use "Open New Window" which only then opens with my windows and tabs from last time.
Naturally, this induces initial panic each time, because I dread the thought of losing all my current tabs.
What is going on here?
How can I fix it?
< Firefox 27.0.1 with Windows 7 Home Premium.>

This started happening to me with the upgrade to v30. Previously, new windows did the proper thing of showing previous tabs/windows.
I have history on, not in private mode, and have cleared cache.

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I had same problem. At least in my case it's due to Nvidia Graphics Card using 3D rendering feature.
When I played videos on YouTube Firefox was loading these DLL:
C:\Program Files (x86)\NVIDIA Corporation\3D Vision\Nv3DVStreaming.dll
C:\Program Files (x86)\NVIDIA Corporation\3D Vision\nvSCPAPI.dll
C:\Program Files (x86)\NVIDIA Corporation\3D Vision\nvStereoApiI.dll
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Why is Firefox such a horrible browser and how did it get popular?

'' locking this thread before it gets out of hand - This is a Firefox support form, not a forum for personal opinions about Firefox or Mozilla. If you want Firefox support please ask for it.''
I can't use Firefox, or "Crashfox", more than an hour without crashing. I have a new computer, have tried every fix known to man, so I don't need any "tips".
Due to my endless efforts to fix the many shortcomings of Firefox, I can say without a doubt that its Firefox. I have no clue how this browser gained any popularity or why anyone would continue to use it. I've lost more data than I can imagine because Crashfox just quits. It can't handle any type of load at all. 5 tabs open and its done. I can have 30 open in Chrome and it works like a champ.
I just switched to Chrome and it kicks Crashfox's ass all over the place. Faster, more stable, and just plain better. Hands down, no questions about it. Good luck catching up to Chrome Mozilla.
AND, IF YOU WANT TO BLAME THIS ON THE PLUGINS, THEN DISCONTINUE SUPPORTING THEM. IT STILL FALLS ON MOZILLA.
Why did I post this, because I feel after all of my inconvenience, i should be able to at least make one comment about Crashfox. This post will probably be removed because no one wants to face the fact that Crashfox is inferior. Very inferior.

the truth stings.
the only way to provide support would be to rebuild Firefox.
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Firefox is officially bloatware.

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if you are using Charter Security or F-Secure and having performance issues on sites using flash please make sure that '''enhanced process monitoring''' is '''disabled''' in advanced settings > computer > deepguard since it might interfere with adobe flash' [http://blogs.adobe.com/asset/2012/06/inside-flash-player-protected-mode-for-firefox.html protected mode].

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I am having exactly the same problems. I have noticed that when a website or link fails to load properly, I have to click the link a second time and about half the time that seems to work. There is clearly a problem and I am anxious for Foxfire to fix this problem!

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I got the thing to zip right along. Here is what I did:
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Closed Firefox - DO NOT RESTART!
Shut the machine off, waited for a couple of minutes fired her back up and Firefox 6 runs just as fast as my old version.

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Why is firefox so insanely slow, sticky and sluggish?

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