I have a Logitech QuickCam Communicate STX webcan that was plug and play when I bought it a few years back. I have used it a few times on Skype when it seemed okay, but have been trying to use it with Google+ Hangouts. There I found that it would be okay at first, but then the picture would freeze. Sound through the built-in microphone is fine.
I wondered if it was the Google plug-in, but just doing some experiments with Cheese and that freezes too. I can seem to un-freeze that (for a second or 2) by waving a hand in front of the camera. Could something be shutting down if it doesn't detect enough movement?
I'm running Kubuntu 11.10. Any suggestions on things to look at?