I hope you can help me, cause I am close to giving up with this problem. I have 3 different devices: 1) PowerPC G5 running OS X-tiger 2) Macbook Pro G4 running OS X-tiger 3) PC running Windows XP The router that connects them is an airport extreme. It also provides the internet connection. The internet works fine. I have a fairly fast connection 10mbit download and 1 mbit upload. The network is encrypted with WPA2. But when I transfer files between the devices or to the drive attached to the airport extreme, then it is very slow. Very slow means 10 seconds to transfer 2mb. 700 mb takes aprox. 40 minuts. Often the transfer actually crashes, because it kinda gives up. It is not possible to connect the devices with cables. The distance is to far. I hope to hear from you.