Keep having problems with my iMac and Apple not responding! Tired of this situation! 7 shut downs in 11 minutes video. For the past week haven't been able to use it since just booting up will shut down! Today I disconnected it in the morning from the outlet and connected it back again in the evening and hasn't shut off yet but know will happen at any minute! Have called my Apple senior advisor and left 2 messages and nothing back from her... This is my 3rd apple (1 Powerbook, 1 MacBook Pro and this iMac) and its the worst!