When I bought my MBP 13 ~14 months ago, it seemed very snappy despite only having a C2D and a 5400rpm drive. Since upgrading to Lion, I've noticed a drop in battery performance, a much more substantial battery drain while in sleep mode overnight and a much increased startup/shutdown time (especially shut down). My housemate has the 2011 MPB 13 (i5) and his seems to have no problems at all especially in regards to shutting down (his MBP shuts down in seconds like mine used to in Snow Leopard). His computer also seems to be quite alot snappier than mine (again, like mine used to be in Snow Leopard). I know his i5 is a much more powerful processor than my C2D but I didn't think that it would make that much of a difference unless there is something else wrong with my mac other than my older generation processor. What I've done: - Onyx - PRAM + SMC - Checked activity monitor for anything unusual - nothing found I have: - 149GB of space available on a 250GB HDD - 1GB ram available out of 4GB With my usual apps open (safari, iTunes, pages, powerpoint, iCal, mail etc) - Coconut Battery reveals that my battery is currently at 94% health with 140 loadcycles Any ideas?