I just purchased the new 15'' PB w/ Superdrive, backlit keyboard, 1.25 Ghz, 512 RAM, etc. on Friday afternoon and have a few questions for anyone who might have answers. After having run the battery down to "10%" remaining juice yesterday, I plugged in the laptop and let it fully recharge. _When I saw that the battery had been charged, I removed the charger, turned on the PB, and found that with a 100% charge the estimated battery life was only around 2.5 hours. _I quickly went to Energy Saver to set everything to optimal battery life settings, but I still haven't been able to get the battery to get anywhere close to the advertised "4.5 hours." _I read the "Mac Help" section on how to prolong battery life, and I did everything that was recommended. _I would think that I could get at least 4 hours on a brand new battery. _So, what is the deal? _What am I not taking into account? _Is anybody else encountering this with their new 15'' PB? My second question is about accessories. _Since this 15'' PB runs pretty hot (I found that out when I had it sitting on my lap for several minutes) I would like to get an accessory that will allow me to operate the PB cooler and more comfortably, but securely. _Which product do you recommend? Also, what other accessories would someone recommend to a "new" laptop user. _This is my first laptop, so I don't know what I will encounter along the way. _I have already purchased an iGO Juice auto/air/AC adapter and a Timbuk2 carry bag. I would appreciate any useful advice and constructive feedback. Thanks!