Got my new MBP 15" with the i7 last weekend. It was beautiful and dandy for the first couple days then my battery was getting drained like no other. Checked to see if 330m was running but it wasn't and is on integrated. Some numbers, it was showing up 3:00 100% battery (100% health) with wifi on, brightness 50% casual web-browsing. That seemed too low for a battery claiming 8-9 hrs (but I expected at least 5 in real life). I didn't calibrate when I first bought it but then I did calibrate a couple nights ago. Battery was fine and showing 6 hrs battery life on the menubar. Dandy! It wasn't draining at a fast rate anymore. A couple days later (today) the battery is acting up again, only lasting 3 hrs with 100% and casual use. It seems ridiculous if I have to calibrate it every two days. Is this something I should take to Genius Bar?