Wotcha folks, Now had our new iMac week and I remain mightily impressed. Some nice new touches in Leopard too (previously on Tiger). However, one minor niggle: when streaming video (like via BBC Iplayer) the computer tries to sleep after about 15 minutes. Is there any way that you can stop it doing this rather than going into system preferences each time before I start streaming? 'Sleeping' after 15 minutes is fine for everything else, just annoying when watching stuff. Cheers!