564 Views 3 Replies Latest reply: Sep 27, 2011 8:21 AM by LAUSBUA
Currently Being ModeratedSep 27, 2011 8:21 AM (in response to itskamwithaK)
I have the same Problem.
Ever since I installed the MacBookPro EFI Firmware update (together with the Thunderbolt Software update), this cluck sound is on.
It comes through the speakers! (I checked with headphones).