Finally, after waiting 8 weeks my 27" iMac (with upgraded memory/processor/video card) arrived. Looks fantastic, now need to get used to it !
Switch was somewhat spoiled by the seemingy faulty airport extreme I bought at the same time, which is not working on the lower 2.4ghz channel resulting in my older periferal wi-fi items (laptop, ipod touch, xbox, internet radio, Samsung TV) not "seeing" an available network. The imac, apple TV and iPad can see the faster 5ghz channel so they are ok. Don't think I've done anything silly, the apple support people coildn't help, so it's back to the shop today to try another one .....
Switch was somewhat spoiled by the seemingy faulty airport extreme I bought at the same time, which is not working on the lower 2.4ghz channel resulting in my older periferal wi-fi items (laptop, ipod touch, xbox, internet radio, Samsung TV) not "seeing" an available network. The imac, apple TV and iPad can see the faster 5ghz channel so they are ok. Don't think I've done anything silly, the apple support people coildn't help, so it's back to the shop today to try another one .....