Ubuntu 12.10 / media playing problem

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http://askubuntu.com – I recently upgraded my OS and I have now Ubuntu 12.10 ( the Gnome 3 version ). Since I installed this OS, I have a problem in playing media files or video/audio in general. At random times, ( usually every 2~10 min ) the media playing freezes for a moment and you can hear/see a hiccup in the audio/video. This happens in every media, whether it's a video/audio file from HDD, stream from internet, youtube video, anything. I have a sample file of vlc playing an audio stream. http://www.sendspace.com/file/42ybmc Does anyone know what this problem may be? I never had it with Ubuntu 10.04 or with (HowTos)