Ubuntu bad for webcam recording/screencasting or is it just me?

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http://askubuntu.com – I have a few webcams sitting around and I tried recording video using GUVCview, VLC, Cheese, and a few others and they all have a terrible background noise, and/or the audio is out of sync...how can I fix this issue, is this a bug in pulseaudio? Screencasting works sometimes, but it usually crashes after about 5 minutes of recording....which is a serious problem! The webcam is a Logitech C270. Computer setup Nvidia Geforce 550ti GPU AMD FX 4100 (3.6ghz Quadcore) CPU Asus M5a97 Motherboard. Ubuntu 12.04/12.10 (HowTos)