Its been running on low battery for ages, and when I went to use it this morning the mouse wouldn't work. I thought this was because the batteries were dead, so I replaced them, and the mouse still wouldn't work. I thought the iMac probably needed to be restarted for the mouse to connect, so I restarted and the mouse worked However after about 10-15 minutes of use the cursor froze and the mouse stopped working! I got a warning on the iMac saying the connection had been lost, and the green light in the underside of the magic mouse was flashing. So I restarted the iMac and the mouse worked again for 10 minutes, before it happened a second time. And then a third time. I'm sure the new batteries I put in the magic mouse were good ones because they were brand new, of the same type and the battery level of the mouse says "100%". This is the first time I've replaced the magic mouse batteries since I got the computer (I've replaced the keyboard batteries once and they worked fine). Anyone got any idea?