Hi all: I am considering upgrading from my ~2 year old MBP to a 2.13 MBA Rev. C and have a question re: RAM performance: how does your MBA w/SSD perform once you have maxed out the 2GB of internal RAM and started swapping to the SSD? The reason why I ask is that my current MBP had 2GB of RAM which would max out under my regular daily use (typically open is Mail, Entourage, Skype, Adium, iTunes, Keynote, Activity Monitor, and Safari with 10+ tabs open... don't ask). As you might expect, everything grinded to a halt once the MBP blew through the physical RAM and it started swapping to the HDD. A few months ago I upgraded to 4GB of RAM and everything ran smoother. So, while the MBA is a good fit given my relatively intense travel schedule, the 2GB RAM limitation was pretty much a show-stopper... until I started playing with a Rev C SSD at a local Apple Store. As you might imagine, I fired up Activity Monitor and then started trying to max out the RAM... to no avail. No matter what I tried, or how many apps and Safari tabs I opened, I couldn't get the RAM to stay pegged and didn't see any sort of OS performance slowdown. Having spent more time than I care to admit watching Activity Monitor, it looked like the MBA/SSD exhibited very different memory consumption characteristics from my MBP. Given that both my MBP and the MBA were running the 10.5.7, what gives? Is it because the MBA was clean and my MBP is loaded up with apps and data? Or is it because the MBA was actually swapping, but to the comparatively much faster SSD drive (as compared to my MBP's HDD)? So, here's my question: is this sort of behavior 'normal' under daily usage conditions? Or was I doing something wrong with my informal load testing? Or am I totally barking up the wrong tree here? This is not about CPU performance (already ground well-covered) but memory performance under multi-application load. Thanks! Sal ps. I've hunted around trying to see if this questions has already been answered elsewhere... any recommendations for further reading on this issue would be much appreciated.