I had/have the same problem : using the VLC version shippable with SuSE 11.0 (RC1), which is 0.8.6h Janus, I am unable to play FLV files loaded from YouTube via the Video Downloader Firefox (3.0b5) plugin. I am going to see whether it works if I disinstall it and install 0.8.4 instead... Thanks for ...