Under Ubuntu 6.10, after installing flashplugin-nonfree 9.0.21.78.ubuntu through Synchronization Software Manager, when the browser plays flash media, it may crash. The answer is uninstall the plugin and re-install flashplayer-mozilla 6.0.79-0.2. Also there might be another way, please refer to: http://blog.richliu.com/2006/11/22/388/ and http://people.debian.org.tw/~chihchun/2006/11/02/flash-player-9-for-linux/