I may have to ditch my intel iMac core duo and get a G5. I thought the second airport update for 2007 would fix my problems once and for all. It seemed to be effective, but alas, my airport is disappearing again. No networks are found, and the computer requires a reset. I can't just shut airport off and then on again; no networks show up. I've tried every solution, and I thought this problem would go away with 10.4.9. It hasn't. 10.4.7 never had these problems. Only with 10.4.8 did it start, and I've already archived and installed from 10.4.3 and downloaded each update individually. My power pc ibook never has airport problems. Has anyone had this problem, and found a permanent solution? My mac is becoming useless as I have to reset it so frequently. Using ethernet is not an option, unfortunately.