I don't have a good signal with my iMac. I'm only getting two lines - it really is more like the dot and the smallest arc - on my wireless indicator. I have what I think is a good wireless router: Belkin N1. I also have a Windows desktop connected with a cable, a MBP that always has a better signal no matter where I'm at in the house and my wife uses a Windows laptop without problem. My house is a single story and the iMac is in the kitchen beside the fridge on a built-in desk. The system is a 2.4GHz Core 2 Duo with 1GB or Ram. I have a bluetooth keyboard and mouse. Does anyone know what I could do to improve the signal strength other than moving the iMac? This seems rather odd to me, but sometimes wireless is.