Firefox sometimes freezes when loading new pages

I have had an issue for several months now & any help with it would be gratefully appreciated.
Quite often, when loading a new page, Firefox will hang for up to 30 seconds; the loading circle in the left hand corner of the tab will freeze & I will be locked out of the browser. That website's usually then fine for the rest of the session, but if I close and reopen Firefox the same thing will happen again.
I have tried other browsers such a IE, and the same thing also happens there. My laptop is becoming quite claggy in general, but I'm hoping I can at least find a solution to this!

Do you get a dialog saying a script is running slowly with Stop/Continue buttons, or does the problem just clear up without any messages?
Two other thoughts:
(1) To diagnose a possible Flash issue, you can switch the Shockwave Flash plugin to "Ask to Activate." The page should load the non-Flash components first. If it's just as slow, then we can rule out Flash as a potential culprit, but if it's much faster, that would be useful to know.
You can make the change on the Add-ons page. Either:
* Ctrl+shift+a
* orange Firefox button (or Tools menu) > Add-ons
In the left column, click Plugins. Then use the drop-down list for Shockwave Flash to select "Ask to Activate."
Sites that use Flash will generate a notification icon on the address bar, and either a link will appear in the black rectangle where you normally get videos loading automatically, or an infobar will slide down between the toolbar area and the page.
(2) About 8 months ago, a user with an enormous font collection discovered that when visiting pages that use downloadable fonts for the first time during a session, Firefox would hang for 3 minutes. ([https://support.mozilla.org/en-US/questions/957111 Firefox hangs on Websites (example: g2play.net)]) I don't know whether this is still a problem, but if you have tons of fonts, as a diagnostic, you could temporarily disable downloadable fonts.
(1) In a new tab, type or paste '''about:config''' in the address bar and press Enter. Click the button promising to be careful.
(2) In the search box that appears above the list, type or paste '''gfx''' and pause while the list is filtered
(3) Double-click the '''gfx.downloadable_fonts.enabled''' preference to switch its value from true to false.
I say temporary because many sites now use fancy fonts to display little icons instead of using images. With downloadable fonts disabled, these icons turn into tall rectangles with two rows of two characters (in other words, useless).

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AEProfiling.framework
AERegistration.framework
Adobe AIR.framework
AudioMixEngine.framework
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iLifeFaceRecognition.framework
iLifeKit.framework
iLifePageLayout.framework
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AdobePDFViewer.plugin
Flash Player.plugin
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Quartz Composer.webplugin
QuickTime Plugin.plugin
SharePointBrowserPlugin.plugin
SharePointWebKitPlugin.webplugin
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WacomSafari.plugin
flashplayer.xpt
iPhotoPhotocast.plugin
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nsIQTScriptablePlugin.xpt
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com.adobe.AAM.Updater-1.0.plist
com.wacom.pentablet.plist
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com.adobe.SwitchBoard.plist
com.apple.remotepairtool.plist
com.microsoft.office.licensing.helper.plist
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Flash Player.prefPane
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AppleIntermediateCodec.component
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Microsoft Office.mdimporter
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cookies.squite answer is Today at 5:15 PM .
New profile, same problem.
We've already established it is not a add-ons problem but obviously there will be less add-ons in this new profile to help exclude.
Since there is two PC profiles on the PC, I tried the second profile, same problem. Used the RESET FF function on the second PC profile...same thing...even followed the instruct for uninstall &re-install...same problem.
(3) different virus scanners, no hard core problems.
Suspect how I have something in Windows setup that no one else is using?

Firefox freezes when loading

Since nobody is looking at the [https://support.mozilla.com/en-US/questions/772825?s=cache&as=s&page=1 old post], I will repost it here and hope that someone will have solution for me.
I tried many things with newest versions with Firefox UX, Aurora and 6 and yet it freezes all the time when loading any page.

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