Menu bar items open and close quickly on first click
Hi,
I am running 10.8.2 and recently when I select an item from the menu bar or an application menu the menu folder flashes on and off very quickly for the first time, and I need to select it again to get it to open properly.
Has anyone expereinced this before, or does anyone have any suggestions on the problem / a solution?
Many thanks,
Ian
MacBook Pro, OS X Mountain Lion (10.8.2)