Hi all, Lately my iMac has been having trouble. Sometimes when I right click on an icon in the dock to bring up the menu, the dock will just freeze. I can do other things but the dock remains frozen. If I open terminal (through spotlight) and issue a killall Dock command it will get rid of the Dock but not relaunch it. I've had to resort to holding the power button down and restarting the computer. Any ideas?