As the title says, recently my ATV2 seems to be losing its connection with iTunes. I can be watching a film then after an hour the film stops and it goes back to the ATV menu. When I try a to start it up again it can't find my iMac. The only way I can get it working again is buy turning off Home Sharing in iTunes, then turning it back on again. Once I have done that it carries on again. I have searched through the internet and can see that I am not alone, but can't seem to find any difinitive answer Currently using WPA2 encryption, connected wirelessly and my iMac is on wireless too. It only seems to have started recently and was doing it before the latest wireless update from Apple. My ATV2 is not Jailbroken Any hints/tips greatly appreciated.