I'm also using a system which is up-to-date. The flash update was installed at the day of its release (I'm always well-informed over these things, see my occupation [;)])
That is: Firefox 3.6 Flash 10.0.42.0
Error also is present when using IE 8 (all updates) and Opera 10.10.
I have a feeling the graph works after a reboot for a short time and later the error reoccurs.