I got this prompt when I tried using Skype the other day, and just wrote it off that Skype hadn't updated to be compatible with Lion yet ... However, now I'm getting it with PhotoBooth, so there's gotta be some kind of bug. I've tried rebooting and it's still not working. Is anyone else having this issue, or know of a cure? The camera was working when I first installed the GM version, and I've used it once or twice. I've only noticed this within the last couple days.