I can confirm this error.
os: feisty (Ubuntu 7.04) browser: firefox 2.0.0.3 (Mozilla Firefox 2.0.0.3) plugin: flashplugin-nonfree 9.0.31 (Shockwave Flash 9.0 r31)
I think this is not a problem with flashplugin-nonfree because the same plugin works fine in Opera. I think it affects Firefox and other Gecko-based browsers.
I can confirm this error.
os: feisty (Ubuntu 7.04)
browser: firefox 2.0.0.3 (Mozilla Firefox 2.0.0.3)
plugin: flashplugin-nonfree 9.0.31 (Shockwave Flash 9.0 r31)
I think this is not a problem with flashplugin-nonfree because the same plugin works fine in Opera. I think it affects Firefox and other Gecko-based browsers.