In Firefox 12, the flash has stopped working. I donít know if it crashed or just stopped. I restarted the browser and it started working once again. Few minutes later it crashed again for the second time. For that reason I have uninstalled the Flash and tried to reinstall it once again but this time I have got the error message saying that version of Flash is not compatible. I used the registry cleaner and restored to an earlier point but still getting the same error during the installation.