I tried to make a Skype call today and, whilst I could see my interlocutor in the Skype call-screen, she couldn't hear me. I tried restarting Skype and rebooting my computer - all to no avail.
Then it occurred to me that yesterday I had installed some updates including some linux-header packages and I assumed that one of these had broken the gspca patch. Simply reinstalling the patch was all that was required to restore my webcam to rude health.
One of the interesting lessons of this otherwise banal event is that you can review your update history using Synaptic. Open Synaptic from the Administration Menu and then click File and select History.
Sources & References:
- Jef Moine: Jef's Page