Living in WiFi crowded environment (more than 10 stations in 2.4GHZ band) forced us to move to 5GHz band. For many months now we have an Apple Extreme base station installed at home. It performed almost flawlessly with one exception – the airport failed to recognize more than one hard drive connected to it’s USB port. After almost giving up on it I have finally found a solution. Connecting the drive directly to my mac and running on it Repair Disk function from Disk Utility solved the problem. Now our airport sees both disks and I’m a happy camper again :-)