Many site issues can be caused by corrupt cookies or cache. In order to try to fix these problems, the first step is to clear both cookies and the cache. Note: This will temporarily log you out of all sites you're logged in to. To clear cache and cookies do the following:

1. Go to Firefox > History > Clear recent history or (if no Firefox button is shown) go to Tools > Clear recent history.
2. Under "Time range to clear", select "Everything".
3. Now, click the arrow next to Details to toggle the Details list active.
4. From the details list, check Cache and Cookies and uncheck everything else.
5. Now click the Clear now button.

Further information can be found in the Clear your cache, history and other personal information in Firefox article.

Did this fix your problems? Please report back to us!

Sorry, no this didn't help. It seems American Express is the only site that won't display correctly. I can access it properly if I open the odd display and right click, then click on 'view page in IE tab'. I can view it properly in Internet Explorer. I have another computer with firefox and it displays properly. Again instead of the normal site display the following is the display I get:

My Account You are under My Account tab Card Accounts

   Account Home
   Statements & Activity
   Make a Payment
   Profile & Preferences
   Card Benefits

Business Accounts

   OPEN Small Business
   Online Merchant Services
   Merchant Site
   American Express @ Work

Other Accounts

   Savings Accounts and CDs
   Membership Rewards® Point Summary
   Credit Secure
   ID Protect
   Bluebird Checking & Debit Alternative

Thank you for working this problem for me

Try Firefox Safe Mode to see if the problem goes away. Safe Mode is a troubleshooting mode, which disables most add-ons.

(If you're not using it, switch to the Default theme.)

• You can open Firefox 4.0+ in Safe Mode by holding the Shift key when you open the Firefox desktop or Start menu shortcut.
• Or open the Help menu and click on the Restart with Add-ons Disabled... menu item while Firefox is running.

Once you get the pop-up, just select "'Start in Safe Mode"

If the issue is not present in Firefox Safe Mode, your problem is probably caused by an extension, and you need to figure out which one. Please follow the Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems article for that.

To exit the Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.

When you figure out what's causing your issues, please let us know. It might help other users who have the same problem.

The issue persisted in Firefox safe mode. However, I took a chance and reset Firefox. Now the problem is resolved. I don't know why. Thanks for the time.

Some changes in setting