Firefox 4 won't load pages, can't connect to websites on mac

After installing Firefox 4, I've had nothing but problems. Sometimes websites load, then next time they can't connect. I've tried a number of solutions, nothing is working. Hotmail can't connect, weather.com won't load correctly. All updates are done, I've uninstalled and reinstalled it a few times. I'm using an imac all up to date.
If I switch to Safari now, the same pages won't load there either. None of this happened until I updated Firefox. However, there were a couple of websites like ehow.com and woot that always gave me issues, but now if I click on a link it typically won't take me to the new page. It has also crashed twice tonight. I have no anti-virus anymore after deleting iantivirus last week.

I have a similar problem. After browsing for a while Firefox will stop loading pages for me on my Macbook Pro. This happens several times a day. In order to fix it I have to restart FF. This is brand new since upgrading to FF4. I've never had this problem before.
My work involves a lot of Internet use and this is becoming a nuisance quite fast.

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Safari won't load pages, but internet connection is good

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Bump
Could this have something to do with the Software Update error discussed in OS X system board? Various sites are off-limits (Network timeout error) such as E-bay; Microsoft etc. while others work fine.
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I recently encountered a problem with Safari. I upgraded to version 3.1 last week, and since then Safari has been hanging some. I upgraded to Safari version 3.1.1 last night, hoping this would help. Now things are worse.
Safari is essentially unusable. It freezes when I first open it. My home page is apple.com, and it won't ever load this page. If I click to open another page, it will work rarely. If I click to open the same page several times, it will load but very slowly.
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Hello jeffery:
Lets try a couple of things (in sequence, try the next if the one before does not help):
Run repair disk from your software install DVD
Run permission repair from your internal HD
Clear the safari cache, trash the preference file (com.apple.safari.plist) and restart.
If none of that helps, it is probably time for an archive and install:
http://docs.info.apple.com/article.html?artnum=107120
An archive and install will install a fresh copy of OS X while preserving your files, programs, and settings. As always, a good backup before software changes is recommended.
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== URL of affected sites ==
http://192.168.1.5/

You can try these steps in case of issues with web pages:
You can reload web page(s) and bypass the cache to refresh possibly outdated or corrupted files.
*Hold down the Shift key and left-click the Reload button
*Press "Ctrl + F5" or press "Ctrl + Shift + R" (Windows,Linux)
*Press "Command + Shift + R" (Mac)
Clear the cache and remove cookies only from websites that cause problems.
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"Remove Cookies" from sites causing problems:
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Start Firefox in <u>[[Safe Mode|Safe Mode]]</u> to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem.
*Switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance
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*https://support.mozilla.org/kb/Safe+Mode
*https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes
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*https://developer.mozilla.org/Tools/Web_Console

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== This happened ==
Every time Firefox opened
== Today about 2 hours ago ==
== User Agent ==
Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0; Trident/4.0; SLCC1; .NET CLR 2.0.50727; Media Center PC 5.0; .NET CLR 3.5.30729; .NET CLR 3.0.30618; .NET4.0C; yie8)

This may solve the problem!
If you have just updated the latest version of Firefox and have Norton Security, download the latest version of Firefox and save it to your hard drive. Then uninstall the version that you are currently using then install your saved latest version and then restart your computer. This totally solved my problem with Firefox and my Norton Security 2010.
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I need help!
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This is not an answer. I have the same problem, what gives? None of the "solutions" have worked. The only thing left I haven't tried is resetting my IP an disabling my routers firewall, which is dangerous. Guess I might just keep on using IE instead, sure it's annoying, but hey it works.

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== This happened ==
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== I uninstalled Norton 360 ==
== User Agent ==
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hello rlyslowff, one thing you could try is to remove all program rules for firefox from your firewall/security software and let it detect the program again...
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Hi, Shadiamond Murray.
Thank you for visiting Apple Support Communities.
Sometimes a simple power cycle of the router can correct the issue that you are experiencing. However, the issue could be a little more complex. Wi-Fi routers need adjustments to settings periodically for optimized performance with the constant progression of wireless device technology. Below, I have included two articles. The first article will cover basic Wi-Fi troubleshooting regarding iOS device connection. The second article cover the recommended settings for current Wi-Fi access points.
iOS: Troubleshooting Wi-Fi networks and connections
http://support.apple.com/kb/ts1398
iOS and OS X: Recommended settings for Wi-Fi routers and access points
http://support.apple.com/kb/ht4199
Cheers,
Jason H.

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Please read this whole message before doing anything.
This procedure is a test, not a solution. Don’t be disappointed when you find that nothing has changed after you complete it.
Step 1
The purpose of this step is to determine whether the problem is localized to your user account.
Enable guest logins* and log in as Guest. Don't use the Safari-only “Guest User” login created by “Find My Mac.”
While logged in as Guest, you won’t have access to any of your documents or settings. Applications will behave as if you were running them for the first time. Don’t be alarmed by this behavior; it’s normal. If you need any passwords or other personal data in order to complete the test, memorize, print, or write them down before you begin.
Test while logged in as Guest. Same problem?
After testing, log out of the guest account and, in your own account, disable it if you wish. Any files you created in the guest account will be deleted automatically when you log out of it.
*Note: If you’ve activated “Find My Mac” or FileVault, then you can’t enable the Guest account. The “Guest User” login created by “Find My Mac” is not the same. Create a new account in which to test, and delete it, including its home folder, after testing.
Step 2
The purpose of this step is to determine whether the problem is caused by third-party system modifications that load automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of the file system or of certain system caches.
Please take this step regardless of the results of Step 1.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. Start up in safe mode and log in to the account with the problem. You must hold down the shift key twice: once when you turn on the computer, and again when you log in.
Note: If FileVault is enabled in OS X 10.9 or earlier, or if a firmware password is set, or if the startup volume is a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to start up and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal startup may also be somewhat slow.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Test while in safe mode. Same problem?
After testing, restart as usual (not in safe mode) and verify that you still have the problem. Post the results of Steps 1 and 2.

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Hi,
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HI,
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http://www.nikonusa.com/Find-Your-Nikon/Product-Archive/Digital-SLR/25424/D40x.h tml
Carolyn

Firefox 4 won't load pages, can't connect to websites on mac

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