For me and my Summer 2009 MacBook Pro, Snow Leopard has been nothing but a headache from the day it was installed. Tonnes of application crashes (Safari, Preview, Numbers, Pages, Handbrake, Mail etc. etc.) which has also resulted in some work being lost, wifi drops, system crashes, freezes, spinning beachballs and no noticeable increase in speed or performance to make up for it has made me yearn for good old stable Leopard. So I've downgraded and my Mac feels safe and steady once again! What about you? Are you happy with SL? Is it good for you or are you just going to stick with it through this tricky time?