So I was happily working away on my shiny new 21.5" iMac today when all of a sudden...


No idea what's happening, but it looks like a GFX issue as it's affecting my 2nd screen too?!
Anyhow I rebooted and all was back to normal (and still is - touch wood).
Has anyone experienced this - the machine is less than a week old, is it worth calling AppleCare?
Thanks for your advice

No idea what's happening, but it looks like a GFX issue as it's affecting my 2nd screen too?!
Anyhow I rebooted and all was back to normal (and still is - touch wood).
Has anyone experienced this - the machine is less than a week old, is it worth calling AppleCare?
Thanks for your advice