Clear the cache and the cookies from sites that cause problems.

• "Clear the Cache": Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"
• "Remove the Cookies" from sites causing problems: Tools > Options > Privacy > Cookies: "Show Cookies"

The instructions in reply #1 did not work.

The problem appears to be with the extension "HTTPS-Everywhere." The solution, which I found on another website is as follows:

Rather than disable HTTPS Everywhere, you can simply disable the washingtonpost.com rule. Go to Tools -> Add-Ons, and then click Preferences for the HTTPS-Everywhere add-on. Then un-check the WashingtonPost box.

This worked like a charm.

The default setting in HTTPS-Everywhere 0.9.5 for "Washington Post (broken)" is set to off (un-checked).

edwardkuch:

You need to update the following plugins:

• Adobe PDF Plug-In For Firefox and Netscape "9.4.2"
• Shockwave Flash 10.2 r152

1. Check your plugin versions on either of the following links':
   • http://www.mozilla.com/en-US/plugincheck/
   • https://www-trunk.stage.mozilla.com/en-US/plugincheck/
   • Note: plugin check page does not have information on all plugin versions
2. Update Adobe Reader (PDF plugin):
   • From within your existing Adobe Reader (if you have it already installed):
     • Open the Adobe Reader program from your Programs list
     • Click Help > Check for Updates
     • Follow the prompts for updating
     • If this method works for you, skip the "Download complete installer" section below and proceed to "After the installation" below
   • Download complete installer (if you do NOT have Adobe Reader installed):
     • SAVE the installer to your hard drive (save to your Desktop so that you can find it after the download). Exit/Close Firefox. Run the installer you just downloaded.
     • Use either of the links below:
       • https://support.mozilla.com/en-US/kb/Using+the+Adobe+Reader+plugin+with+Firefox (click on "Installing and updating Adobe Reader")
       • Also see Download link': http://get.adobe.com/reader/otherversions/
   • After the installation, start Firefox and check your version again.
3. Update the Flash plugin to the latest version.
   • Download and SAVE to your Desktop so you can find the installer later
   • If you do not have the current version, click on the "Player Download Center" link on the "Download and information" or "Download Manual installers" below
   • After download is complete, exit Firefox
   • Click on the installer you just downloaded and install
     • Windows 7 and Vista: may need to right-click the installer and choose "Run as Administrator"
   • Start Firefox and check your version again or test the installation by going back to the download link below
   • Download and information: http://www.adobe.com/software/flash/about/
     • Use Firefox to go to the above site to update the Firefox plugin (will also install plugin for most other browsers; except IE)
     • Use IE to go to the above site to update the IE ActiveX
   • Download Manual installers.
     • http://kb2.adobe.com/cps/191/tn_19166.html#main_ManualInstaller
     • Note separate links for:
       • Plugin for Firefox and most other browsers
       • ActiveX for IE

Downloaded HTTPS Everywhere from CNET. This fixed the problem. Washingtonpost content loads without a problem. Just updating Adobe Reader/Flash etc didn't solve it.

~ I HAD THE SAME PROBLEMS WITH MY NETFLIX QUEUE & WITH PAGES LOADING ON NETFLIX. WHEREAS I WOULD ALWAYS GET A BLANK PAGE WITH THE MESSAGE "URL...NOT FOUND" OR "URL....INVALID". ~ IT TURNS OUT IT MAY BE YOUR BROWSER'S NETWORK CONNECTION SETTING WHICH SHOULD BE CHECKED "AUTODETECT PROXY SETTINGS FOR THIS CONNECTION"

~ IN MOZILLA FOX GO TO "MENU" --> "TOOLS" --> OPTIONS --> ADVANCED --> NETWORK --> "CONNNECTION" --> "SETTINGS" --> THEN CHECK "AUTODETECT PROXY SETTINGS FOR THIS NETWORK"

~ HOPE IT WORKS FOR YOU LIKE IT DID FOR ME