Currently Being ModeratedSep 18, 2012 1:13 AM (in response to Hans Eklundh)
Strange at the infrequecy/frequency!??
Get Temperature Monitor to see if it's heat related...
And/or iStat Pro...
If you have any temps in the 70°C/160°F range, that's likely it.
Currently Being ModeratedSep 18, 2012 12:57 PM (in response to BDAqua)
It is only in the Safari window. Not seen it in any other application window or on the desktop. If it was a heat related problem it should appear all over my screen, but thats not the case.