Q: why my ibooth camera is not working, why my ibooth camera is not working

Hello fatty de gozila,

If you are having issues with the iSight camera as you state, then I would take a look at the article below to go over some general troubleshooting to isolate the issue to software or hardware. Check in different applications if it still works as well as in a different user if you have one. You might even need to reset the PMU. 

How to Troubleshoot iSight

http://support.apple.com/en-us/HT2090

Regards,

-Norm G.