I have a 1.67 non HD 15-inch powerbook, with 1GB of RAM. I get a lot of pageouts, and it's often slow. I think adding RAM would be useful -- for everything from my use of photo editing programs to just using things like slingplayer. On the other hand, RAM is still pricey -- About $200+ for 2GBs -- and it's a two-year old computer of a model that has the propensity (but has not been yet effected) to have a lower RAM slot failure problem (I still have a year on apple care in any event). So, do I dump the money into the older computer (might as well upgrade the OS later too), or just struggle along using the PB knowing that I won't get another maching for a year (I just upgraded to a mac pro, so most of the hardware cash went there, and my *need* for a new machine is satiated for most tasks when I'm in my home office). I think the logical thing to do would be to wait, but I'd sure like to realize some additional speed in the interim.