Webcam freezes system

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http://chakra-project.org – Using VLC viewer, or the 'test' functionality in multimedia setup freezes my system.  For a few seconds, I can move my mouse cursor, but it moves much slower, then it freezes completely and the only solution is to hard boot.The same problem happens with a TV-capture card I have installed in the same box.I have found one report of this problem reported with another distro.  I am trying to find the post again, but it says to modify a .config file which doesn't exist in chakra. (HowTos)