Once in a while for noapparent reason I get what's in the screen shot below. It will be a random photo or icon from this site that repeats across the screen. Its not there when I get into an actaul thread. This also happens on another vB woodworking site. Then just as randomly the problem disappears after a few days
Quiting Safari doesn't clear the problem don't know if a power cylce will clear it. Just curious what causes it
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