I have an early 2008 white Macbook (2.1 GHz) and about a year ago, I upgraded the RAM from 1 to 2 GB. With Firefox taking up nearly half my RAM, it was definitely needed. And I noticed an improvement in speed and overall performance. In that time, I also upgraded my HD from the standard 120 GB that came with it to a 500 GB (7200 rpm). Also helped. However, in recent times, the overall performance bottlenecks if I have too many tasks going. My uses are generally listening to music (I have an extensive iTunes library), surfing the web, using Photoshop/CS5, and iPhoto '11 (another extensive library). iPhoto, in particular, has run incredibly sluggish on my system. While more RAM is, of course, always good, would doubling my RAM from 2-4 GB solve, or at least, help these issues? Another factor is Lion. While 2 GB should work, I fear that it might not run as well as 4 GB. So, given all these concerns, would it just make sense to upgrade the RAM? Thanks!