As mentioned here, the first 10.8.5 upgrade made the camera unavailable for Skype. This being totally unacceptable to me, I applied the fix that was around on macrumours, I backed up the AppleCamera.plugin under /Library/CoreMediaIO/Plug-Ins/DAL/, deleted it, and put the 10.8.4 version of the file there. This fixed it until yesterday, when I applied the second 10.8.5 update. The update didn't complain about anything, but now the camera doesn't work again. I've tried using the backed up file, the 10.8.4 again, and the new version that a friend who didn't apply the fix got from the new update (which I didn't). His AppleCamera.plugin is 2.3MB in size, while mine is 2.2MB or 2.4MB (backed up / 10.8.4).
I'm sure everyone who applied that fix is now with the same problem, but I can't find anyone mentioning anything anywhere. Help!