I have a terrieble problem. Each time i point at the dock with the mouse, the dock disappears, the background is flashing gray and then the dock appear again. I have read all threads about this problem, and I have: - deleted the dock-file in /Users/Mac/Library/Application Support/Dock - deleted the com.apple.dock-files in /Users/Mac/Library/Preferences - tried to login as another user at the OSX - restart the mac in Safe Mode. --> in Safe Mode i works! And when i restart into normal mode it works . . . until i restart the computer again. Then the problem is back again. I have Macbook Pro 17'' mid 2009, 3.06 GHz Intel Core 2 Duo The OS is: OS X 10.8.2 Thanks in advance!