I will be buying a 15" Powerbook before starting school August 22. I am trying to decide if I should order now, using the $100 rebate (which ends June 25). Or if I should wait for the back-to-school discounts and/or possible PB speed bump. I'm leaning towards waiting, but I'm wondering what's the longest I can wait and still get my PB in time. If there is a major PB change, say in July, I'm thinking it wouldn't be delivered soon enough, with the production delays. I imagine there are some other students out there in a similar predicament. Thanks for your comments.