Hi Everyone i have an imac 27inch mid2010 intel model and ever since my imac returned from the apple store after repairing a damaged HDD im getting network and wifi problems. My internet connection keeps dropping and i keep having to reset my airport by turning it on and off, its an extreme pain in the a** but iv also realised there are many people with the problem only with older models. This has left me very confused and im tired of turning airport on & off every few minutes, and im sure its not my ISP as im using virgin media's 50mb connection with superhub and its working perfect on five of my other devices. If anyone knows a solution or fix for this, or even having the same problem please post a reply and hopefully we can fix this together. Best wishes.