I am sat here infront of both my iBook G4 and my intel iMac They are both connected to my wireless router (which is downstairs) My iBook has full bar and is connected fine. so is my iMac, but every minute or so the iMac disconnects from the network, then reconnects. it's driving me nuts, it's crashing my downloads, sending growl notifications every 30 seconds and generally being a pain in the arse. but the iBook isn't...they're sat less than a foot from each other. any advice?