I'm trying to print wirelessly using Apple's Airport Express (I'm running OS 10.5.8 on my iMac). Other applications work (sending iTunes to powered speakers), but when I try to print with USB plugged into Airport Express I get a message "Printer is currently off-line." As soon as I move the USB back to the computer (a USB hub) the printer comes back online and everything in the queue prints automatically. Is the Phaser 6180 incompatible with Airport Express? Any suggestions?Thanks.