A Mid 2011 iMac with 10.8.3 Router is a Belkin N600 Duel band iPad, iPhone connect wireless fine, the iMac wont connect. The Wireless icon on the iMac continues to have an explanation point through it. But if I plug in an ethernet cable directly from the router to the iMac, the wireless connection works fine. I have created a new wireless connection in the Network Prefs....no good I have turned off the security on the router....Still not good. Any ideas?