I have a late 2006 model iMac running OS X 10.7.5 that has suddenly stopped connecting to wifi. Whenever i try to connect i receive an error message that says "Could not connect to (network name) a connection timeout occurred" or words to that effect. I have googled and tried almost all the suggestions of how to try to solve the issue and i have even changed the airport card to no avail. Is there anyone out there who can tell me what to do or perform the fix for a reasonable fee? The Apple store in Liguanea told me some ridiculous price just to replace the airport card that i would have been supplying, God only knows what the cost would be if they had to perform a fix for me.