My HD on a new 13" is just about full and I upgraded to 1.7 as soon as it came out. So what is the consensus with this 1.7 and beachballs? I need to add a new HD but should I wait for a fix? Install it and hope for the best? Is it possible to go back and delete the 1.7? (No I haven't backed up the computer yet. My external HD's are also full so I need to buy a new one for TimeMachine. Thanks BTW, I have a 500 Scorpio Blue on its way.