Hi everybody at present I just upgraded my current Ubuntu 9.04 to 9.10.The upgrading procedure was extremely simple as well as I restarted the PC. But however I undertook some MP3 file to play by using the VLC multimedia player. There was no sound. I went to sound preferences as well as went through certain processes to change the settings. But there I understood that the latest beta version of Ubuntu has not distinguished my sound card.

I also have some related issues with playing a VIDEO file. When I undertook to play a AVI file by using the VLC MediaPlayer, The OS automatically logged out as well as the login screen being popped up.

I make out beta versions are prone to such bugs. But im not a professional to resolve it on my own. Any suggestion would be more welcomed.