Hi all. Ive purchased a 2.3GHz Quad Core Intel® Core i7 which is being delivered on Tuesday. Since ordering i have been reading about problems with the graphics i.e. a snowing effect and the screen repeatedly going blank. The reviews that i read are a few months old so was wondering if this has been fixed or if i would be better waiting for 10.8.3 to be released if it is still happening and see if the update fixes it.