i ventured inside my ibook today (witht help of a guide), to learn how to replace the optical drive, because i will be doing so in a few days. so, just now i noticed that system profiler says i have 256mg ram, when i actually have 384. ??? what is going on. my ibook has 128 built in, and a few months ago, i added a 256 so-dimm (brand new), i just popped off the keyboard, etc, etc, took out the sodimm, put it back in, rebooted, and it still says theres only 256mb ram! is this a big deal? is there still physically 384mb ram, and it thinks theres only 256, or is only 256 of it working? ahhh, confused😡