White powder falling out the bottom of my 27" retina iMac
The mac is about a year old and today I moved it from it's usual location and it's spilling white powder out of the bottom vent holes. Obviously if I lived in Columbia I'd think it was less than scientific however it's a concern as I can't imagine what it is and there doesn't seem to be anyone else experiencing similar problems but there's a lot of it and the more I move it the more comes out. Any ideas please?
iMac, OS X Mountain Lion (10.8.1), i7 and Wacom