I'm sorry everyone for not posting about the new i5 & i7's! I wish I were! My iMac is showing it's age and it's limited processing power (I would love an i7). I need to get more power out of this thing, the only way I can do that is by getting more ram. So I was thinking about getting two 4gb sticks, but I heard that there was a limitation on this model, perhaps a 6gb limit. So my questions are: 1. how much ram can I get in this bad boy? 2. where is a good, cheap place to get 4gb DDR2 800mz sodimm's? Thanks!