when i visit a particular site to watch flash movie, i get a message saying : "Movie Not Loaded" But when i check the same site on IE or Google Chrome, the movie loads.
This issue started after i updated to the latest Firefox 4.0.1. I had also updated the flash plugins but still the same problem.
Start Firefox in Troubleshoot Firefox issues using Safe Mode to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
You can also try "Reset all user preferences to Firefox defaults" on the Troubleshoot Firefox issues using Safe Mode start window.
In Firefox 4 you can use one of these to start in Troubleshoot Firefox issues using Safe Mode:
Hi cor-el, your suggestion solved the problem. The video loads in safe mode. But how do i fix the cause of the problem when i restart to normal mode?
What extension could be the problem?
How do i narrow the trouble extension or plugin in normal mode?
If it does work in Safe-mode then disable all extensions and then try to find which is causing it by enabling one at a time until the problem reappears.
In Firefox 4 Safe mode disables extensions and disables hardware acceleration.
If disabling hardware acceleration works then check if there is an update available for your graphics display driver.
I had the same problem. I tried all the solutions above from cor-el without any luck.
But after clearing offline storage, youtube started working again.
Tool -> Options -> Advanced -> Network -> Clean Now (under Offline Storage)