In Firefox and Chrome (both latest stable, Ubuntu 11.04), flash is unavailable. I've uninstalled and reinstalled
flashplugin-installer several times. I've tried creating a plugins folder in
/opt/google/chrome and symlinking
npwrapper.libflashplayer.so in that folder. Going to
about:plugins in Chrome shows me that the flash plugin is indeed installed and enabled, but nevertheless neither Chrome nor Firefox actually handle the flash.