I have a 15" 2.2Ghz (RS) MBP and the machine is an absolute dream to use. Model Name: MacBook Pro Model Identifier: MacBookPro3,1 Processor Name: Intel Core 2 Duo Processor Speed: 2.2 GHz Number Of Processors: 1 Total Number Of Cores: 2 L2 Cache: 4 MB Memory: 3 GB Bus Speed: 800 MHz Boot ROM Version: MBP31.0070.B07 SMC Version: 1.16f10 Serial Number: W88032V2X91 Sudden Motion Sensor: State: Enabled I've noticed two things which kind of bug me about this machine, however... I recently upgraded the RAM to 4 Gig. (Mishkin Mushkin 2GB PC2-5300 DDR2 SODIMM, 667 Mhz, unbuffered, for Apple) Originally, I purchased and installed two 2 Gb sticks in the MBP. While I noticed the performance has improved a great deal, I find that boot up seems to take longer, easily better than 1 minute. When running the original 2 gig of Apple RAM didn't seem to take this long. I was wondering if there were any performance issues related to using other manufacturers' RAM in MBP. As a side note, I upgraded the hard drive to a SEAGATE 160GB Momentus 7200.2 SATA Notebook HDD w/ G-Force Protection, NCQ, and a 8MB Cache. Further, I removed one of the 2 gig sticks and added it to a MBP 17" 2.3 Ghz machine, maxing its memory at 3 gig. The 15" MBP now runs 3 gig as well. Performance in still strong on the 15" MBP, but boot up remains slow. Another issue I noticed on the 15" MBP, which is not apparent on the 17" MBP, is that it runs *really, really* hot. While I've encountered plenty of warnings about the hot running temperature of MBP, the 15" could fry and egg. (!) The 17" runs relatively cool to the touch, however. I was wondering if there are any known issues or hazards related to the running temperature of the 15" model of MBP? Thanks!