207 Views 2 Replies Latest reply: Sep 18, 2012 12:55 PM by Hans Eklundh
I have a 27" iMac 3,4 GHz Intel Core i7 with 16 GB RAM running OS X 10,8.1 and a AMD Radeon HD 6970M 2048 MB Graphics Card. I have two 23" Cinema Display Screens attached to the two Thunderbolt ports.
Recently I have started to discover alien debris on my screen in Safari 6.0. It shows up randomly on certain sites, like Macrumors in the image enclosed. When I reload they appear in other positions. When I return to the site 30 minutes later, they don't appear at all. Strange.
What is it? And what could be causing it? It appears only in Safari and only occasionally.