Even with new batteries my wireless mouse takes an eternity to connect to my new iMac. If the computer is up and running and I turn on the mouse it will never connect. If I turn on the mouse and then wake up the computer by pressing a key or turning on the keyboard, the mouse won't connect for a minimum of 30 to 60 seconds or may never connect at all. The mouse is a foot in front of the computer. What's up? By the way, how long does it normally take?