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.

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You can check the network.http.* prefs on the about:config page.
Reset all network.http prefs to the default value via the right-click context menu -> Reset if they are user set (bold).

• http://kb.mozillazine.org/about:config

Check at least:

• network.http.accept-encoding (default: gzip,deflate)
• http://kb.mozillazine.org/network.http.accept-encoding

Try to boot the computer in Windows Safe mode with network support (press F8 on the boot screen) as a test to see if that helps.

By accident I found the problem. It was with a program that comes with Real Player called Speed Bit Accelerator. After shutting this off the problem went away (so far). I hope a future version of Firefox addresses this issue. I would really like to be able to use Speed Bit. For now though My problem is Solved.