Webcams not always being detected in Linux??

Taken from http://www.pclinuxos.com/forum/index.php?topic=103456.0

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My webcam works great with Skype and Cheese and it used to work great with a program called FaceFlow but now when i try to use it with FaceFlow i get the following pop-up: Adobe Flash Player can't locate a camera on my computer? I have installed via Synaptic the latest version of Adobe Flash Player which is 11,1,102,63 but without any affect?

Would it be possible to uninstall the present version of Adobe and use an older version in the hope that the webcam will be recognised?"

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I did a quick test of FaceFlow the other day ......  I have two webcams for testing, one is an older model and the other a uvc compatible device.

Faceflow would not recognise the older model, only the uvc camera.

Seems you have come across the same problem  "

What's the problem with this?