Ibook, Wifi Issues With 10.4.2


Two ibooks now have failed to recognize that they even have Airport wifi capability after downloading Tiger 10.4.2 For the first, I thought it was just my laptop so I went back to 10.4.1 and all was restored perfectly. Now, seeing this problem has appeared again, I would like to know how to fix this problem with my second ibook since upgrades have security issues as well.