I got my 13" MBP brand new at the beginning of May. Near the beginning of July I began to see tons of graphics artifacts, so I brought it to the genius bar and they replaced my logic board. A few days ago it began to stutter. I don't know how to explain it except that using the mouse and opening/closing apps was like watching a video game at 10 fps. I restarted and although it took a while to boot, everything worked fine. Today I was watching a movie without A/C power, and it just shut down, like the battery was pulled or something. I plugged it in, figuring I had run out of battery life, restarted, and it booted up fine. I logged in and saw that I had 50% capacity left and then a few minutes later the same thing happened. Now when I restart, it plays half of that gong apple boot noise, then shuts down. I took out the HDD to test if that was causing it, but no dice. I don't have any aftermarket RAM in there, but I pulled each stick and replaced them individually, but still no luck. I can't get past the start noise before if just quits. My question: would I be out of line to just ask for a replacement MBP when I go in to the nearby Apple certified repair place? Apple refunds them for AppleCare repairs, right? I'm not driving 1.5hrs again to the Genius Bar and going without my computer for a week only to have it be even more messed up than it was before I got it "fixed".