so i went into system profiler a few minutes ago to copy my system specs for a kernel panic report that i was submitting to apple. and much to my amazement (frustration, really) it said i only had 512 mb ram. i got my powerbook about five months ago, bto with 1 gb (2 dimm) ram. and now suddenly it isn't recognizing one of the modules. the first thing i did was to shut the computer down and remove the battery. then i removed the outermost dimm and tried to reboot. the computer made a sound like i'd never heard before and then the sleep light came on in a steady glow. so then i removed the second dimm and replaced it with the first one. and the computer booted just fine. when i replaced the other dimm (in effect having switched them around from their original arrangement) and booted it still only detected 512 mb. based on this it would seem apparent to me that the problem here isn't with the ram slots themselves, but rather that one of the modules is fried. is this something that happens a lot in new powerbooks? i mean, this is really the last thing i need to be dealing with right now. i have apple care for the next few years, so i'm assuming the best course of action would be to call them and explain the problem. my question is whether they'll just send me a replacement module or if i'll have to send them the whole computer. i would very much dread the latter. any advice?