Reload the webpage while bypassing the cache

• Hold down the Shift key and click the Reload button with a left click.
• Press Ctrl + F5 or Ctrl + Shift + R (Windows and Linux)
• Press Command + Shift + R (Mac)

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

Clear the Cache: Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"

Remove Cookies from sites causing problems:

• Tools > Options > Privacy > Cookies: "Show Cookies"

Your System Details shows;

Installed Plug-ins

Shockwave Flash 14.0 r0 Shockwave Flash 13.0 r0

Having more than one version of a program may cause issues.

If you are still having problems, Start Firefox in Safe Mode {web link} While you are in safe mode; Press the Alt or F10 key to bring up the tool bar. Followed by;

Windows; Tools > Options Linux; Edit > Preferences Mac; application name > Preferences

Then Advanced > General. Look for and turn off Use Hardware Acceleration.

Poke around safe web sites and see if there is still a problem. Then restart.