Comment 138 for bug 192888

From the modified description:

"Workaround for early Hardy adopters: Manually uninstall the libflashsupport via 'apt-get remove libflashsupport' or synaptic. This is necessary because libflashsupport would not automatically be removed by update-manager when it was changed from a dependent package to a recommended package during the Hardy development cycle."

Confirmed that it fixes the problem (or at least the nasty symptoms ;) for me! :)