I know there are a lot of threads flying around, but this one is, at least slightly, different. I got the unibody aluminium Macbook on day one (before the started calling it a Pro). It is 2 years old and has a 2.4Ghz processor, 4GB ram and an SSD hard drive. If I switch toe the 2.16Ghz MBA with 4GB ram and SSD (or however the new system works), am I going to notice any significant drop in performance? Perhaps when using photoshop or the like? Remember, the MBA now has better graphics than my Macbook (320M vs 9400M) Please don't bring price into this.