ok. so i'm a total mac noob, and i just made the switch a week ago with a refurb 2.0 c2d blackbook. i've read all over the place about upgrading ram, and about how the macbook will actually recognize 3.3gb if you install 2x2gb sticks. anyway, long story short, my macbook came and i ordered 2x2gb sticks to keep it in dual-channel mode, and when i booted up and checked my system profile, i'm staring at this: am i totally reading this wrong, or is it really telling me that it's addressing all 4gb? as far as i know, it will recognize both 2gb sticks, but only put up 3.3gb on the profiler... AND i thought that the current chipset/platform couldn't address 4gb as a hardware limitation?????