I wrote about the problems about WiFi on a friends iMac. My wife her iMac (10.5.8) doesn't work either. This iMac has an Airport card and it used to work with the iPad. The Network name I created is not shown in the WiFi list. I can see the name in the Network window. The only WiFi that will work is the Airport Express on my Power Mac (10.6.8) Paul Moortgat