Hi there, I'm usually pretty good at solving these kinds of things, but this happened out of the blue a few days ago. All this little pink, green, and red squares pop up every now and then. I have no idea what or what I can do to get rid of them. Here's a link to a few photos showing what I mean. Thanks a lot for any help!
http://gallery.mac.com/derek.atkinson#100045
http://gallery.mac.com/derek.atkinson#100045