I did a search but found nothing on this problem. I have a iMac 27" that's just a few months old. I have put new batteries in the mighty mouse but still have this problem. I am constantly losing connection of my mighty mouse. It will reconnect and work fine for a short time then the connection will be lost. This has happened quite frequently as of late. This time though, it will not reconnect at all. Can anyone tell me: Why am I constantly losing connection to my mighty mouse? How do I get my mighty mouse to connect to my iMac? Thanks for reading. Your help will be much appreciated.