Hello --bill
Disconnect your USB Webcam and try all of Apple's suggestions re: Built-in iSight in
How to Troubleshoot iSight.
By the way, if you need to post back because the troubleshooting suggestions do not help, please answer a few questions.
(1) Is your OS X Maintenance up to date?
(2) Is the problem the same for all applications and user names you tried?
(3) Are you using iChatUSBCam, iGlasses, or some other third-party app that might have been set to display this effect?
(4) Is your system info correct that you are running 10.4.8?
(When you decide to update to
10.4.9, a few iNtel Mac users have reported missing data after the update, so you should consider backing-up your MBP's Home Folder, or at least your MBP's important data, before updating.)
Jim
Mac OS X (10.4.9) G5 DP 1.8 External iSight