Built in iSight issues since big update.

Question

I ran and installed a load of updates on Monday and this included a iFEE(??) one for intel chip stuff.
Anyhoo,
All worked ok the then next time I turned on my Mac book, the green iSight indicatr came on as well and woudn't turn off but in iChat video preview was on the options on the task bar but the picture was black. Did a restart and it went away and the video preview bit vanished from iChat. Turned it on this morning and the same thing happened regarding the indicator light. Restarted and all gone.
This Mac book is only 2.5 weeks old - stuff shouldn't be happening!
Any suggestions? I see it's similar to the problem posted by Telemund except my light does go off on shutdown.

Answer 1

Hello Chav
You may have a hardware problem that requires the services of an Apple Technician, but it seems more likely that one or more of your updates is not quite right. To find out, use the following suggestions:
For any installer/updater that asks for an administrator password whether Apple or third-party software, I stop (Quit) the installer, repair permissions (click here if you need help), run the installer again, restart if directed by the installer, immediately repair permissions again, and then check to be sure that things are working correctly. The reason for this process is, first, to ensure that the installer has appropriate access (permissions) to all files that it needs to access in order to install the update, and, second, to ensure that your file permissions are restored to their correct state in case the installer somehow changed something that it shouldn't have. If your Mac's Software Update... prompts you to update several apps, you can download the updaters from Apple Downloads and run each one after its own permissions repair to assure permissions repair before and after each update like this::
 repair permissions -> update 1 -> repair permissions -> update 2 -> repair permissions -> ...
The above process is not required unless you are asked to enter an administrator's password, but repairing permissions cannot do any harm (other than waste a bit of time), so I make it my habit to use the process on every install or update.
If you did not use that procedure when you updated, try repairing permissions now. Then check to see if your iSight problem persists. If it does, try the following suggestions, testing after each one to see if that is the fix that solves your problem.
(1) Try the relevant suggestion for built-in iSight in Apple's How to Troubleshoot iSight.
Be sure to include the checks for whether the problem is "application-specific" and "user-specific". Click here if you need help creating a new user account to check whether your problem is "user-specific" during Troubleshooting. Problems that are "application-specific" indicate trouble with the application rather than your iSight or OS.
(2) If resetting or the other Troubleshooting suggestions do correct your problem, you can try the following:
• Backup your Home Folder, or at very least, your important files.
• Repair permissions. 
• Then download and apply the Mac OS X 10.4.10 Combo Update v1.1 (Intel)
• Finish with another Permissions Repair, and then check your iSight again.
Users have reported fixes to a variety of audio, video, connectivity, and software conflicts and unreliability issues after properly applying Combo Updates.
(3) Some iNtel Mac laptop users have also reported success after unplugging their Macs and leaving the battery out for half-an-hour to overnight. Be sure to disconnect everything including power and peripherals while you battery is removed.
(4) If none of these suggestions help, contact Apple or an Apple-Authorized Service Provider for a professional check.
EZ Jim
PowerBook 1.67 GHz   Mac OS X (10.4.10)    G5 DP 1.8  External iSight