I always installed the flash plugin by hand, unrar all the codecs et cetera. But on the forum I found someone who recommended the package “ ubuntu-restricted-extras”. Did an apt-get install and I worked great! Installed all the stuff I needed:

[quote] flashplugin-nonfree, gstreamer0.10-ffmpeg, gstreamer0.10-plugins-bad, gstreamer0.10-plugins-bad-multiverse, gstreamer0.10-plugins-ugly, gstreamer0.10-plugins-ugly-multiverse, libdvdread3, liblame0, msttcorefonts, sun-java6-jre, unrar [/quote]